Mathematics College

Please help me 7th math

Please Help Me 7th Math

Answers

Answer 1

Answer:

1/12

Step-by-step explanation:

Answer 2

Answer:

cdcsvcd

Step-by-step explanation:

Related Questions

what its 1010 + 800 pls help​

Answers

Answer:

1,810 hope this helps ;)

Answer:

1810

Step-by-step explanation:

lol, did I get trolled?

Find the point of intersection of the lines in the figure, given that line A, in red, has equation y=x+3 and line B, in blue, has equation 2x+3y=10.
x=
y=

Answers

Answer:

(0.2, 3.2)

Step-by-step explanation:

line A, in red, has equation          y=x+3   times 3    3y=3x+9

line B, in blue, has equation 2x+ 3y = 10

                                             -3x + 3y = 9      subtract thes two equations      

                                         (2x - -3x) + (3y -3y) = 10 - 9

                                                  5x + 0y  = 1

                                                         5x  =  1  

                                                           x = 1/5    or  0.2

                                                y = x + 3

                                                y = 0.2 + 3

                                                y = 3.2

The diameter of a spindle in a small motor is supposed to be 4.1 millimeters (mm) with a standard deviation of 0.1 mm. If the spindle is either too small or too large, the motor will not work properly. The manufacturer measures the diameter in a sample of 41 spindles to determine whether the mean diameter has moved away from the required measurement. Suppose the sample has an average diameter of 4.01 mm.

Required:
What are the null and alternative hypotheses?

Answers

Answer:

The null hypothesis is [tex]H_0: \mu = 4.1[/tex]

The alternate hypothesis is [tex]H_a: \mu \neq 4.1[/tex]

Step-by-step explanation:

The diameter of a spindle in a small motor is supposed to be 4.1 millimeters

This means that the null hypothesis is that the diameter has the supposed value, that is, [tex]H_0: \mu = 4.1[/tex]

If the spindle is either too small or too large, the motor will not work properly.  The manufacturer measures the diameter in a sample of 41 spindles to determine whether the mean diameter has moved away from the required measurement.

Tests if it has moved away, that is, if the mean is different from the specified value of 4.1. So the alternate hypothesis is [tex]H_a: \mu \neq 4.1[/tex]

Please help

Complete the square
to find the vertex
of this parabola.
y2-8x+2y+17=0
([?], [ ]

Answers

Answer:

the answer is 2,-1 please mark me brainless thank you

Answer:

The answer would be (2,-1)

Step-by-step explanation:

Fill in 2 and then -1

(b) Rewrite the percentage in the sentence below as a decimal.
The photographer filled 40% of her memory card with animal pictures.

Answers

40% = 0.4
Explication:
40 / 100 = 0.4

A garden watering bucket has 3000 milliliters
of water in it, but there is a hole that is leaking
18 milliliters every minute. How much
water remains in the container after
a certain number of minutes?

Answers

Answer:

3000 - 18*x

Step-by-step explanation:

if "a certain number of minutes" = x then

water remains in the container  = 3000 - 18*x

Answer:

y = 3000 - 18x

Step-by-step explanation:

To describe the scenario of a garden watering bucket with 3000 milliliters of water and a leak of 18 milliliters per minute, we can create a function.

Let's denote the number of minutes as 'x' and the amount of water remaining in the container as 'y'. The function can be represented as:

y = 3000 - 18x

In this function, 3000 represents the initial amount of water in the container, and 18x represents the amount of water leaked after x minutes.

Therefore, the function that describes the scenario is:

Solve for the missing side of this right triangle.
24 mi
16 mi.

Answers

Answer:

384

Step-by-step explanation:

I just went to my calculator and did 24×16 and I got 384

Which side lengths form a right triangle?

Answers

C is the right answer
I’m looking at B but it might be C

in which is the vaule of the 6 ten times the vaule of the 6 in the number 6000

Answers

Answer:

Consider matrix A.

What is the inverse of A? Fill in the missing elements in the matrixs.

Step-by-step explanation:

Consider matrix A.

What is the inverse of A? Fill in the missing elements in the matrixs.

Answer:

Hello! Your answer would be, 600

Step-by-step explanation:

if we start backwards, the value of 6 in 6000 is equal to 1/1000. If you want to find what is 10 times that, multiply 1/1000 with ten and you get 1/100. That is equal to 6/600. The value of 6 is 600.

Hope I helped! Brainiest plz!♥ Have a nice morning! Hope you make a 100%! -Abby

what should be added to -7/3 to get 3/7
A.21/58
B.58/21
C.47/21
D.50/21​

Answers

Answer:

b

Step-by-step explanation:

What is the volume of a hemisphere with a radius of 3.6 cm, rounded to the nearest tenth of a cubic centimeter?

Answers

Answer:

97.7

Step-by-step explanation:

A company bought 7 machines. Each machine weighs 642.4 pounds. How many pounds do the 7 machines weigh altogether?

Answers

Answer:

4496.8 pounds

multiply 642.4by7

If x and y vary inversely and x = 8 when y = 23, what is y when x = 4?​

Answers

11.5 because all you do is divide the numbers by 2

Answer:

11.5

Step-by-step explanation:

x=8 & y=23

then

x=4 is half so you divide by 2

so half of 23 would be 11.5. If you are rounding then it would be 12

Question 1 of 10
Using the graph below, select all statements that are true.
.
+10
O A. (5.1) = 5
OB. This graph is one-to-one.
C. f(0.6) = 0
D. This is the graph of the greatest integer function,
E. (-3.2) = -3
SUBMIT

Answers

Answer:

the answer is going to be b

Multiply.


−3.9(−5.6)(3)

The product is

Answers

Answer:

65.52

Step-by-step explanation:

−3.9×−5.6×3

Multiply −3.9 and −5.6 to get 21.84.

21.84×3

Multiply 21.84 and 3 to get 65.52.

65.52

Ernesto is deep-sea diving with two friends. Alexandra is floating on the surface 6 meters
above Emesto, and Krysta is exploring a coral reef 7 meters in front of Ernesto. How far apart
are Alexandra and Krysta? If necessary, round to the nearest tenth.

Answers

Answer:

Use the Pythagorean theorem.  The answer should be 3.61.

Step-by-step explanation:

4. Calcula la rapidez promedio de un perro que
recorre una distancia de 20 metros en 4
segundos.

Answers

Answer:

5 m/s

Step-by-step explanation:

PLEASEEE HELP
Show steps too
Thank you

Answers

Answer: C. (-2, 0)

Step-by-step explanation:

5x+6y=-10                                                                                                                                 3x-2y=-6Now you need to get -2 to equal -6 so it cancels out5x+6y=-10                                                                                                                                 3(3x-2y)=3(-6)Then distribute the 35x+6y=-10                                                                                                                                 9x-6y=-18Now add the equations together14x=-28  Now solve for x: Divide both sides by 14x=-2Plug x into either equation to solve for y.3(-2)-2y=-6Distribute -2-6-2y=-6 Add 6 to both sides6 cancels out leaving: -2y=0Divide both sides by -2y=0

So, the answer is (-2, 0)! Hope this helps                                                                                                                            

What is the volume to the nearest tenth?

Answers

Answer:

34.4 yds3

Step-by-step explanation:

tuve la misma pregunta hoy

PLS HELP DUE SOON!!!

Answers

Answer:

its both.

Step-by-step explanation:

RNA and DNA are made up of nucleotide(s).

Answer: Both DNA and RNA

Step-by-step explanation:

How many 5/6 s are in 3?

Answers

Step-by-step explanation:

If we think over it, we could recognise that this question is like

How many 3's are in 6?

Probably the answer is

2

, as

6

÷

3

=

2

So, we divide

1

by

5

6

→

1

÷

5

6

→

1

⋅

6

5

→

6

5

⇒

1

1

5

=

1.2

So, there are

1

1

5

number of

5

6

's in

1

Answer:

3/(5/6)

Step-by-step explanation:

multiply the numerator and denominator by 6

18/5

help me please!!!!! and thank you!

Answers

Answer:

After 5 minutes, the submarine is at 240 ft below sea level.

Step-by-step explanation:

-300 + 16z

After 5 minutes, z = 5.

-300 + 16(5) = -300 + 80 = -240

After 5 minutes, the submarine is at 240 ft below sea level.

plz help FREE BRAINLIST AND ALOT OF POINTS!!
TRUE or False? .Probability works for random games of chance .

True
False

Answers

Answer:

True

Step-by-step explanation:

Pretend you are playing a marble game. All the marbles are in a bowl. You notice there are more green than red and blue marbles so you will be most likely to get the green marble.

1/2 x 288 = ???????
What is the answer?

Answers

Answer:144

Step-by-step explanation:

Use a calculator

or 1/2 x 288 =  288/2 = 144

Answer: 144

Step-by-step explanation:

I'm assuming that the "x" in this statement is a multiplication symbol.

Multiplying any number by 1/2 or 0.5 is the same thing as dividing it by 2.

Therfore the answer is 288/2 which is 144.

A square has an Area of 49 square feet. What is the measure of a side length? * ​

Answers

Answer: 7 feet

hope this helps, have an amazing day <3

the circumference of a circle is

Answers

Answer:

Step-by-step explanation:

the formula for circumference of a circle is 2 x pi x r(radius).

Answer:

The circumference of a circle is pretty much just the perimeter of the circle Step-by-step explanation:

a 56-inch board is to be cut into three pieces so that the second piece is three times as long as the first piece and the third piece is four times as long as the first piece if x represents the length of the first piece find the length of all three pieces ​

Answers

Step-by-step explanation:

length of 1st piece = x inch

length of 2nd piece = 3x inch

length of 3rd piece = 4x inch

x + 3x + 4x = 56

8x = 56

x = 7

Thus,

length of 1st piece = 7 inch

length of 2nd piece = 3 × 7 = 21 inch

length of 3rd piece = 4 × 7 = 28 inch

A village wishes to measure the quantity of water that is piped to a factory during a typical morning. A gauge on the water line gives the flow rate (in cubic meters per hour) at any instant. The flow rate is about 100 m3/hr at 6 am and increases steadily to about 280 m3/hr at 9 am. Using only this information, give your best estimate of the total volume of water used by the factory between 6 am and 9 am.

Answers

Answer:

570 m³

Step-by-step explanation:

The volume of water is the product of flow rate of water and the time taken. We are to get the volume of water used between 6 am and 9 am, that is for 3 hours (9 - 6).

We are given the flow rate at 6 am and the flow rate at 9 am, but this flow rate changes between 6 am and 9 am. To get the estimate of the water used, Let us assume that it flows at the same flow rate as it was at 6 am throughout, hence:

[tex]V_L= 100 m^3/h * 3h=300\ m^3[/tex]

Also, let us assume that it flows at the same flow rate as it was at 9 am throughout, hence:

[tex]V_R= 280 m^3/h * 3h=840\ m^3[/tex]

To get the best estimate of the total volume, let us find the average of the two values, hence:

[tex]Volume=\frac{V_L+V_R}{2} =\frac{300+840}{2}=570\ m^3[/tex]

What are the solutions to 2(x+1^2)=18

Answers

Answer:

2( x + 1) = 18

2x + 2 = 18

2x = 16

x = 16/2 = 8

I will give you Brainliest and 500 points if you do this

Answers

1 = A 2= H 4= J 5= D
i don't know the answer to 3 though sorry
hope this helps if u have any questions let me know and also if u could mark this as brainliest i would really appreciate it!
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