Mathematics High School

8) what is the first operation you should perform to solve this-

Answers

Answer 1

Answer:

Subtract 12

Step-by-step explanation:

Start by subtracting 12

Then multiply both sides by -5

Related Questions

I NEED THE SLOPE INTERCEPT FORM!!! ITS DUE BY 12

Answers

Answer: y = 4x -1

Step-by-step explanation:

Given by the graph.

Y axis

and rise over run.

The diameter of the wheel of a unicycle is 0.7m. Elaine tries to ride the unicycle and manages to go in a straight line for 32 full revolutions before falling off. How far did Elaine manage to cycle in metres? Give your answer rounded to 1 DP.

Answers

Answer:

70.4metres

Step-by-step explanation:

Wheel Diameter = 0.7m

Wheel Radius; 0.7m / 2 = 0.35m

For one rotation of the wheel, the distance travelled = circumference of the wheel.

Circumference = 2 x pi x radius

= 2 × π × r

= 2 × π × 0.35

= 2.1991148575 m

Elaine tries to ride the unicycle and manages to go in a straight line for 32 full revolutions

Distance travelled with 32 full revolutions of the wheel = 32 x 2.1991148575 m =

Distance in meters = 70.37167544m

Approximately = 70.4m

Therefore, Elaine managed to cycle 70.4metres

2. 1. Asia's new boat has a cruising speed of 27 miles per hour. At that rate, how long will it take her to travel the 3 miles across Old Hickory Lake?

Answers

Answer:Time = 1/9 Hours 0r 0.11111 hours

Step-by-step explanation:

We Know that Speed = Distance / Tim\e

Using the constant rate of the speed given as 27 miles per hour at

Distance = 3miles

Time = Distance / Speed

Time = 3 miles / 27miles per hour = 1/9 hours

The right triangle below is formed by squares A, B, and, C. Square A has an area of 9 meters and Square C has an area
of 16 square meters. What is the area of Square B?

A.) 6 square feet
B.) 18 square feet
C.) 5 square feet
D.) 25 square feet

Answers

Answer:

I think it's 18 square feet

I really need help with this.

Answers

9514 1404 393

Answer:

a. (1.4, 2.6)

b. (3, 2)

Step-by-step explanation:

a. The circumcenter is the intersection point of the perpendicular bisectors of the sides of the triangle.

For points X(a, b) and Y(c, d), the perpendicular bisector of XY can be written as ...

(c -a)(x -(c+a)/2) +(d -b)(y -(d+b)/2) = 0

Then the equation of the perpendicular bisector of MN is ...

(-2-4)(x -(-2+4)/2) +(4-0)(y -(4+0)/2) = 0

-6(x -1) +4(y -2) = 0

3x -2y = -1 . . . . divide by -2 and put in standard form

Similarly, the perpendicular bisector of NO is ...

(0-(-2))(x -(0-2)/2) +(6 -4)(y -(6+4)/2) = 0

2(x +1) +2(y -5) = 0

x + y = 4 . . . . divide by 2 and put in standard form

So, the point of intersection is ...

(3x -2y) +2(x +y) = (-1) +2(4) . . . . . add twice the 2nd equation to the 1st

5x = 7 . . . . . . simplify

x = 1.4 . . . . . . divide by 5

y = 4-1.4 = 2.6 . . . . . find y from the second equation

The coordinates of the circumcenter are (1.4, 2.6).

b. The centroid is the average of the vertex coordinates.

centroid = (A +B +C)/3 = ((1, 2) +(3, 4) +(5, 0))/3 = (1+3+5, 2+4+0)/3 = (9, 6)/3

centroid = (3, 2)

A construction crew is building a two story house, but they have not built the staircase between the floor yet. The height of the staircase is 12 feet, the base of the stairs will be 6 feet from the wall. How long does the temporary ramp need to be to the nearest tenth of a foot?

Answers

Answer:

13.4feet

Step-by-step explanation:

The set up forms a right triangle.

Given

Height of the staircase h = 12 feet

Base of the stairs b = 6feet

Required

Length of the ramp l

Using the pythagoras theorem

l² = h² + b²

l² = 12²+6²

l² = 144 + 36

l² = 180

l = √180

l = 13.42 feet

Hence the length of the ramp to the nearest tenth is 13.4feet

Solve for m∠.? Please Help!

Answers

Answer:

Step-by-step explanation:

Answer:

[tex] \purple {\bold {m\angle A =70\degree}} [/tex]

Step-by-step explanation:

ABCD is a trapezoid. AB || DC and AD is transversal...(given)

[tex] AD \cong BC.. (given) [/tex]

Therefore, ABCD is an isosceles trapezoid.

Measures of base angles of isosceles trapezoid are equal.

[tex] \therefore m\angle D =m\angle C[/tex]

[tex] \because m\angle C =110\degree... (given) [/tex]

[tex] \therefore m\angle D =110\degree [/tex]

[tex] m\angle A+ m\angle D =180\degree [/tex]

(interior angles on the same side of transversal)

[tex] m\angle A+ 110\degree =180\degree [/tex]

[tex] m\angle A =180\degree -110\degree [/tex]

[tex] \purple {\bold {m\angle A =70\degree}} [/tex]

There are 195 adults and 320 children at a zoo. The zoo makes a total of $6,515 from the entrance fees, and the cost of an adult and a child to attend is $27, how much does it cost each for a parent and a child? Let a represent an adult. Let c represent a child. Enter a system of equations to represent the situation, then solve the system.

Answers

Answer:

a+c=27

195a+320c=6515

Step-by-step explanation:

adult (a): 195

children (c): 320

total $: $6515

child $: 27

a+c=27 --> c=-a+27

195a+320c=6515

sub the first equation into the 2nd equation to get a=17

sub a=17 into c=-a+27 to get c=10

so, an adult ticket is $17 and a child ticket is $10.

HELP FOLKS PLEASE ( i don't have much time)

Answers

Tan Angle y= 7/4
Tan Angle z= 4/7

Answer:

tan(Y) = 7/4

tan(Z) = 4/7

Step-by-step explanation:

Tangent ratios are the TOA of SOHCAHTOA.

tan( angle ) = opposite / adjacent

The Empire State Building in New York City is 1,454 feet tall. The observatory on the 86th floor is 404 feet from the top of the building. How high is the observatory above the ground?

Answers

Answer:

1,050 ft

Step-by-step explanation:

This is due like now!!!! Please help!!!

Look at the graph:

What is the slope?
Simplify your answer and write it as a proper fraction, improper fraction, or integer.

Answers

1/3x is the answer to your question

what is this pls help me 54 point to whoever helps me

Answers

Answer:

3 1/5

Step-by-step explanation:

For a theater play, the school sold 120 blue tickets for students and 80 red tickets for adults. What percent of the tickets were sold to students?

Answers

Answer:

Step-by-step explanation:

120+80=200 the total number of tickets

120(student tickets) ÷ 200 (total tickets)= .6 =60%

Answer:

bin

Step-by-step explanation:

bghgghhshshsbabbsnajswjjegvrjrjrhrbrhrriritt

A new bed costs $1,200. If the tax rate is 8.25%, how much will the bed cost including tax?

Answers

Answer:

1299

Step-by-step explanation:

y = mx + b . . . . . . line with slope m and y-intercept b

y = 2x + 5

Two gym classes are participating in Field Day. One class has 24 students and the other has 27 students. The gym teachers want to divide the students in each class into the largest possible equal groups, with no students left over. If all the groups have the same number of students, how many students are in each group?

Answers

Answer:

bilmiyorum, bulamadım.

3 students in each group
class 1 - 8 groups
class 2 - 9 groups

let me know if i’m right because i’m not 100% sure!

How do you prove that BC is bisecting angle ABA

Answers

Answer:

go to khan academy and u can find a vid. answer there!

Step-by-step explanation:

-x+5+4x
simply the expression

Answers

Answer:

3x+5

Step-by-step explanation:

Put these numbers in order from least to greatest.

-10/20, 7 3/30, 0.2

Answers

-10/20, 0.2, 7 3/30

in order from least to greatest

please help me with this slope problem! :) (brainliest)

Answers

Answer:

Plot these points

(1,935)

(2,870)

(3,805)

(4,740)

(5,675)

Slope= -65

y intercept = 1000

and what it's saying is that we travel at a speed of 65 units an hour and we start 1000 miles away

Step-by-step explanation:

Just graph these points which you can get by plugging in the numbers

1000-65= 935

(1,935)

1000-65*2=870

(2,870)

1000-65*3= 805

(3,805)

1000-65*4=740

(4,740)

1000-65*5= 675

(5,675)

y= mx+b where m is the slope and B is the y intercept

we can re write the equation as follows

-65x+1000

It's pretty clear that -65 is the slope and 1000 is the y intercept

Which statement best describes the area of Triangle ABC shown below?
А
с
00
(5 points)
O It is twice the area of a square of side length 4 units.
O It is one-half the area of a square of side length 4 units.
It is twice the area of a rectangle with sides 4 units x 3 units.
It is one-half the area of a rectangle with sides 4 units x 3 units.

Answers

Answer:

Would be the 3rd one I believe

Step-by-step explanation:

The statement that is true is:

It is one-half the area of a rectangle with sides of 4 units x 3 units is true.

What is a triangle?

A triangle is a 2-D figure with three sides and three angles.

The sum of the angles is 180 degrees.

We can have an obtuse triangle, an acute triangle, or a right triangle.

We have,

The area of the triangle.

= 1/2 x base x height

Now,

Base = 4 units

Heights = 3 units

So,

Area = 1/2 x 4 x 3 = 6 units²

Now,

It is twice the area of a square of the side length of 4 units.

6 units² < 16 units²

This is not true.

It is one-half the area of a square of side length 4 units.

1/2 x 16 units² = 6 units²

8 units² = 6 units²

This is not true.

It is twice the area of a rectangle with sides 4 units x 3 units.

2 x 12 units² = 6 units²

24 units² = 6 units²

This is not true.

It is one-half the area of a rectangle with sides 4 units x 3 units.

1/2 x (4 x 3) units² = 6 units²

Break it down 2(8n)^4 because 4 is the exponent you will multiply 8n four times so it will be 8n*8n*8n*8n so add the 2 to it and it will be 2*8n*8n*8n*8n. Hope this help :)

The expression 2(8n)⁴ is equivalent to 2¹³n⁴ or 8192n⁴ after simplifying.

What is an expression?

It is defined as the combination of constants and variables with mathematical operators.

We have:

[tex]\rm = 2(8n)^4[/tex]

[tex]\rm 2\times 8^4\times n^4\\\\\rm 2\times (2^3)^4\times n^4\\\\\rm 2\times 2^1^2\times n^4\\\\\rm 2^1^3\times n^4\\\\\\\rm 2^1^3 n^4\\\\or\\\\8192n^4[/tex]

Thus, the expression 2(8n)⁴ is equivalent to 2¹³n⁴ or 8192n⁴ after simplifying.

Learn more about the expression here:

brainly.com/question/14083225

#SPJ2

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