Determine the value of variable in the following
equation:
2x + 40 = 30

Answers

Answer 1
Answer: x = -5

Steps:
2x + 40 = 30
2x = 30 - 40
2x = -10
x = -10 / 2
x = -5
Answer 2
I believe the answer is x=-5

Related Questions

between which two consecutive integers does √ 350 lie​

Answers

Answer:

18 and 19

Step-by-step explanation:

Answer:

18 and 19

Step-by-step explanation:

root 350 is 18.71

so in between 18 and 19

Shelia's measured glucose level one hour after a sugary drink varies according to the normal distribution with μ = 132 mg/dL and σ = 11.3 mg/dL. what is the level L such that there is probability only 0.01 that the mean glucose level of 5 test results falls above L?

Answers

Answer:

134.6

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula. This is X when Z has a p-value of 1-0.01 = 0.99. So it is X when Z = 2.325.

The level is L = 134.6

The Central Limit Theorem estabilishes that, for a random variable X, with mean  and standard deviation, large sample size can be approximated to a normal distribution with a mean and standard deviation

Which of the points (s, t) is not one of the vertices of the shaded region of the
set of inequalities shown below?
ss 20 -0.5t
s 12-t
ss 24-t
S>O
t>0

Answers

Answer:

24,0

Step-by-step explanation:

Dulce the dog loves to go on walks. Each morning she walks for 45minutes.She also goes for a 20 minute walk at lunch, and an evening stroll for 1 hour and 30 minutes. How long does she walk each day?

Answers

Answer:

2 hour and 35 minutes

Step-by-step explanation:

45 +20 = hour and 5 minutes

65+90=155 or 2 hour and 35 minutes

2 hrs and 35 minutes

I need help pls pls pls

Answers

Answer:

e. 55 miles hope that helped

Kira rode 20 miles. You can see on the hours 3-4 it starts from 35 and goes to 55 which is 20 miles :)
Hope this helps

Simplify 1/4^-2 x 1/4^-7

Answers

Look that question yo on Photomath I would give u the answer

giving brainliest *easy*

Answers

Answer:

1130.4

Step-by-step explanation:

2x100pi + 160pi

2m2 -7m2 + 10n2 +2n3

Answers

Answer:

2 n 3 − 5 m 2 + 10 n 2

Step-by-step explanation:

Answer:

- 10m + 26n

Step-by-step explanation:

2m × 2 - 7m × 2 + 10n × 2 + 2n × 3

4m - 14m + 20n + 6n

- 10m + 26n

Find the area of the shape below

Answers

Find the area of the rectangle then find the area of trapezium and add them up

Please help, test due in 2 hours! Will give good review and brainliest.

Answers

Answer:

B. Ellipse

...............................................

REAL LIFE ISSUE!

HELP PLEASE I NEED TO KNOW IF IM GOING TO BE HELD BACK!!!
What grade point average would I have if I had 3 A's, 1 B, 1 D, and 1 F.

Answers

Answer:

You are doing good I would say! Your average grade would be a B- Or just a normal B Somewhat around there.

Step-by-step explanation:

I hope this helps you and good luck! Bye!

Grade scale:

A → 100-90

B → 89-80

C → 79-70

D → 70

F <70

That being said to see your grade, add all your grades up then divide it by how many grades you have.

That being said, if you add all your grades then divide it by how many grades you have, you should have a 85.6 as your average.

Hence, your average is a B.

A group of 25 people are going to run a race. The top 8 finishers advance to the finals.

Answers

what’s the question

The diameter, D, of a sphere is 18.2 mm. Calculate the sphere's volume, V.
Use the value 3.14 for x, and round your answer to the nearest tenth. (Do not round any intermediate computations.)

Answers

Just put the values into the formula

PLEASE HELP ME :C ...

Answers

Answer:

B) a²-(2*4)

Step-by-step explanation:

Since we are looking for the gray area only, we need to find the total area of the figure, but subtract that from the area of the unshaded area.

The total area of the figure is a*a=a²

The area of the unshaded figure is 2*4=8 units^2

This means the gray area is a²-(2*4) units^2, making B correct

At Walmart™ you can buy 8 hot dog buns for $2. At Costco™ you can buy the same hot dog buns, but they are $5.60 for 16 hot dog buns. Using two tables, decide who has the better deal (who sells 1 hot dog bun for the cheaper price).

Answers

The better deal is Walmart

Naomi's fish is 40 millimeters long. Her guinea pig is 25 centimeters long.
How much longer is her guinea pig than her fish?

Answers

Explanation 1:

Her guinea pig is

25 cm  long.

25 cm = 250 mm

Her fish is  40 mm long, so her guinea pig is longer than her fish by

25 cm − 40 mm = 250 mm − 40 mm = 210 mm= 21 cm

Explanation 2:

First, lets convert the length of Naomi's guinea pig from cm to mm.

1 cm=10 mm

We can multiply each side of the equation by 25 to obtain the length of the guinea pig in mm.

25 × 1 cm = 25 ×  10 mm

25 cm = 250 mm

Because we have a length of the guinea pig and the fish in a common metric we can subtract the two values: 250 mm − 40 mm = 210 mm The guinea pig is 210 millimeters longer than the fish. Or, if we want to convert this to centimeters we can divide by 10: 210 millimeters 10 = 21 centimeters

Hope this helps have a good day/night!

:21 ezz it is 21 centimeters

(ignore the answer choice i put down i completely guessed)

Answers

Answer:17

Step-by-step explanation:

The algebraic expression for the sum of 5 and g?

Answers

Answer:

5 + g

Step-by-step explanation:

The sum of 5 and g,

5 + g

Hey please help with this one I promise I’ll mark you brainliest real anwsers tho :3

Answers

Answer:

Area is 364

Step-by-step explanation:

A parallelogram's area is equal to base times height. So it doesn't depend on the angle at all, as long as the base and height are constant.

That means that the area of the parallelogram on the left is the same as if it was a rectangle (an extension of the rectangle part on the right).

This brings us to the answer - the area is the same as the area of a 14x26 rectangle.

14*26=364

Alternatively, let's compute the area of the rectangle on the right:

18*14 = 252

And the area of the parallelogram

14 * (26-18) = 14*8 = 112

And the area of the composite figure is 252+112 = 364

Please help me with the two column proof
Part 2B

Answers

Answer:

Step-by-step explanation:

I can't read the diagram well enough to tell you how exactly this should be done and I've been reprimanded a couple of times for using comments to solve problems, but this much I can tell you.

You need 2 angles

One comes from vertical angles being equal.

the other comes from the other end of the line that is bisected. Be careful to chose this angel. The two angles are equal because the lines are parallel.

Now what you have is ASA which always proves congruency. AAS should never be used if you can avoid it. If you search out AAS on the internet you will find long discussions on why AAS should never be used.

In this case it will work but even if it does, it should be avoided because you may run into questions where there are conditions that make AAS incorrect. Even if you are told it is OK in your lessons, you should not do it.

lecture ends.

Sorry.

Find the sector area.

Answers

Answer:

D

Step-by-step explanation:

I think the awnser for this should be d

Express the area of the entire rectangle.
Your answer should be a polynomial in standard form.

Answers

Step-by-step explanation:

Let a=x+2 and b=x+6

The area of a rectangle is given by

A=a*b

So

[tex](x + 2) \times (x + 6) = {x}^{2} + 8x + 12[/tex]

Answer:

A = x² + 8x + 12

Step-by-step explanation:

Area of a rectangle:

A = bh

A = (x + 6)(x + 2)

A = x² + 2x + 6x + 12

A = x² + 8x + 12

Find the pattern. What numbers come next?
50, 44, 38, 32,
A 27, 22, 17
B
24, 16, 8
C
25, 18, 12
D
26, 20, 14

Answers

Answer:

D

Step-by-step explanation:

the pattern is -6 to get the next number

You take away 6 each time so the anwser is D

la expecion del volumen​

Answers

Answer:

no hay imagen lo siento

Step-by-step explanation:


Look at the two quadrilaterals shown below.
Which one of the following statements about these quadrilaterals Is FALSE?
Both quadrilaterals have four equal angles.
Both quadrilaterals have four equal sides.
Both quadrilaterals have opposite parallel sides.
Both quadrilaterals have four right angles. The two shapes are a square and a rectangle

Answers

Answer:

"Both quadrilaterals have four equal sides."

Step-by-step explanation:

This statement is only true for a square since as we all know it has four equal sides, but a rectangle has two parallel sides that are equal to each other but on the other two parallel sides, they must differ in length.

Answer:

"Both quadrilaterals have four equal sides." is the false statement

Step-by-step explanation:

giving brainliest!! *easy*

Answers

Answer:

370 square millimeters

Step-by-step explanation:

2x9x5=90

2x10x5=100

2x10x9=180

90+100+180=370 square millimeters

Answer

450mm^3

Step-by-step explanation:

the picture has the workings

A=l×w×h

A=10mm×9mm×5mm

A=450mm^3

I’ll give points + brainalist for he correct answer (:

Answers

The diameter of a tire is the distance across the tire through the center. Since tires are circular, you can find the circumference of the tire from the diameter. The circumference represents the distance the tire travels when it makes one revolution. If you know the number of inches in a mile and the circumference, you can find the number of times the wheel turns per mile.

First, measure the diameter of the tire in inches.

Secondly, multiply the diameter by pi, which is approximately 3.1416, to find the tire circumference. For example, if the tire has a 20 inch diameter, multiply 20 by 3.1416 to get 62 inches.

Hope this helped

having trouble on this ixl

Answers

Answer:

1/2

Step-by-step explanation:

Since they sold 3 cupcakes of each section, it would be a 50/50 chance that the next one would be either.

Three friends all have ages that are consecutive integers. The sum of their
ages is 57. What is the age of the oldest friend?

Answers

Answer:

Friend C would be 20 years old

Step-by-step explanation:

Consecutive integers are integers that follow each other

In this case, we have three friends (let's call them A, B, and C) who's total age sum is 57:

A + B + C = 57

If Friend B is one year older than Friend A and Friend C is two years older than Friend A (or one year older than Friend B), then we write and solve for Friend A:

A + (A + 1) + (A + 2) = 57

3A + 3 = 57

3A = 54

A = 18

So if Friend A is 18 years old, then Friend B is 19 years old, and Friend C is 20 years old, making Friend C the oldest.

Answer:

20 years old

Step-by-step explanation:

3x + 3 = 57

3x = 54

x = 18

X + 2 = 18 + 2

Answer = 20 years old

Find the slope of the line that passes through the indicated points.

(4,-1) and (8,1)

(1,4) and (3,0)

Answers

#1
2/4 = 1/2

#2
-4/2 = -2
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