Two mechanics worked on a car. The first mechanic charged $115 per hour, and the second mechanic charged $50 per hour. The mechanics worked for a combined total of 25 hours, and together they charged a total of $2,550. How long did each mechanic work?

Answer:

36

Step-by-step explanation:

We can use the is/of=%/100 proportion...

x  =  90

40    100

First, we need to multiply 90 by 40. 90x40=3,600.

Next, we have to divide 3,600 by 100. 3,600/100=36.

Rose needs to get 36 questions correct to get at least a 90%.

Hope this helps!! Have a great day C:

Answer:

C

Step-by-step explanation:

Cool

The ratio of 450 grams to 15 grams is 30:1.

A ratio is a comparison between two amounts that is calculated by dividing one amount by the other. The quotient a/b is referred to as the ratio between a and b if a and b are two values of the same kind and with the same units, such that b is not equal to 0. Ratios are represented by the colon symbol (:). As a result, the ratio a/b has no units and is represented by the notation a: b.

Given:

ratio of 450 grams to 15 grams

So, the ratio is

= 450/ 15

= 30 / 1

Hence, the ratio of 450 grams to 15 grams is 30:1.

Learn more about ratio here:

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Answer:

210°  

Step-by-step explanation:

To change from radians to degrees, multiply 7π/6 by 180/π

That will give 210°  

Would appreciate a Brainliest if this helped :)

Answer:

135 small cubes fill the prism

Step-by-step explanation:

Find the volume of the prism.

V = l * w * h

l = 2 1/4 = 2.25

w = 3/4 = 0.75

h = 1 1/4 = 1.25

V = 2.25 * 0.75 * 1.25

V = 2.109375

I wouldn't round this quite yet.

V of 1 small cube = 1/4 * 1/4 * 1/4 = .015625

So divide the volume of the prism by the volume of the small cube

2.109375/0.015625 = 135

Answer:

Plss this question is Soo blurry I can't read it can u retake this plss?

Answer:

387500

Step-by-step explanation:

31/4/100×500

3100/4×500

387500

Answer:

X  =  9

Step-by-step explanation:

Answer:If you simplify it will be 7a−12b−4

Step-by-step explanation: Yes

Answer:

r = 7/4

Step-by-step explanation:

Radius is always 1/2 of the diameter.

Answer:

there can be many answerrrs I guess

.

Step-by-step explanation:

5.25+5.25=10.5

2.5+8=10.5

have a great day :)

Answer:

It would be 45 gallons for 6ft

15 gallons for 2 feet

Step-by-step explanation:

Answer:

n=2 see the pic above

Step-by-step explanation:

i am very sure

Answer:

N = 2

Step-by-step explanation:

I got this answer right on Khan Academy.

Hope this helps! :)

Answer:

I don't know all of these, but I do know some.

Step-by-step explanation:

1. LA ≅ SA Given

2. I'm sorry I don't know this

3. ∠LAT≅∠ SAT and Def of angle bisector for the reason.

4. △LAT≅△ TAS and I believe it's SAS for the reason.

Answer:

Answers in explanation

Step-by-step explanation:

LA ≅ SA              |  Given

TA ≅ TA              |  Reflexive Property

∠LAT ≅ ∠SAT    |  Definition of angle bisector

△LAT ≅ △SAT   |  SAS

Answer:

-15 < -9 and |-9| < |-15|  (the third one) is true.

Step-by-step explanation:

-15 is smaller than -9.

The absolute bars cancel out the negative sign.

9 is smaller than 15.

Answer:

○ [tex]\displaystyle [\frac{1}{2}, ∞[[/tex]

Step-by-step explanation:

All you want to do is set the radical equal to zero to determine your domain, and sinse substituting [tex]\displaystyle \frac{1}{2}[/tex] in for [tex]\displaystyle x[/tex] would make this 0, it would be the INCLUDED endpoint, so your bracket faces [tex]\displaystyle \frac{1}{2},[/tex] then continues on infinitely.

I am joyous to assist you at any time.

**The ONLY time this is not the case is when you have a rationale-radical function, in which you must never have 0 in the denominatour.

Answer:

x+3y+13

Step-by-step explanation:

combine like terms

Answer:

Step-by-step explanation:

you will combine the like terms, x, y and numbers

3x-2x=x

-5y+8y=3y

3+10=13

x+3y+13

Answer:

46701813038

Step-by-step explanation:

Answer:7

Step-by-step explanation:7

Answer:

SAS

Step-by-step explanation:

Answer: C

Step-by-step explanation: 5 times 42 equals 210, and 210 divided by 14 is 15! Good luck! :D

Answer:

7 15/16

Step-by-step explanation:

find the same denominator which is 16

3/4x4/4 = 12/16

7 3/16+12/16= 7 15/16

probably bad explanation but hope it helps.. :)

Answer:

Mixed number-7  15/16

Exact form-127/16

Decimal-7.9375

Step-by-step explanation:

Answer:

Age of Jose =  5 years

Age of Adrian = 13 years

Step-by-step explanation:

Let:

Age of Jose = x

Age of Adrian = x+8

After 3 years

Age of Jose = x+3

Age of Adrian = x+8+3 = x+11

Now, we are given, in 3 years he will be twice as old as his brother.

So, we can write

Age of Adrian = 2 (Age of Jose)

x+11 = 2(x+3)

x+11=2x+6

2x-x=11-6

x=5

So, we get value of x = 5

Now, the present ages will be:

Age of Jose = x = 5 years

Age of Adrian = x+8 = 5+8 = 13 years

Adrian is 8 years older than his brother, Jose. In 3 years, he will be twice as old as his brother. Find the present age of each.

Let's represent the age of Jose as [tex]\large\rm x[/tex]

According to the problem, Adrian is 8 years older than Jose, so Adrian's age can be represented as [tex]\large\rm x + 8[/tex].

In 3 years, Adrian's age will be [tex]\large\rm (x + 8) + 3[/tex] and Jose's age will be [tex]\large\rm (x + 3)[/tex].

The problem also tells us that in 3 years, Adrian will be twice as old as Jose:

[tex]\Large\begin{aligned}\rm{(x + 8) + 3}& =\rm{2(x + 3)}\\\rm{x + 11}&=\rm{2x +6}\\\rm{\cancel{x\red{-x}} + 11}&=\rm{2x \red{-x} + 6}\\\rm{11}&=\rm{x + 6}\\\rm{11\red{-6}}&=\rm{x + \cancel{6\red{-6}}}\\\bold{5}&=\rm{x}\end{aligned}[/tex]

So Jose is currently 5 years old.

To find Adrian's age, we can use the fact that Adrian is 8 years older than Jose:

[tex]\Large\begin{aligned}\rm{Adrian's\: age}& =\rm{x + 8}\\\rm{Adrian's\: age}&=\rm{\red{5} + 8}\\\rm{Adrian's\: age}&=\bold{13}\end{aligned}[/tex]

Therefore:

[tex]\\\\[/tex]

For more information visit these links:

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Answer:

a = 1/6

Step-by-step explanation:

To solve, divide both sides by 5 1/4

a = 7/8 / (5 1/4)

a = (7/8) / (21/4)

a= 7/8 * 4/21

a= 28/168

a= 1/6

Answer:

y=-2/3x

Step-by-step explanation:

if you use the graphing calculator, the y intercept of the equation is 0 therefore y=mx

m=-2/3

the slope intercept equation is y=-2/3x

Answer:

a = 9, b = 11

x = 2, y = 17

Step-by-step explanation:

opposite sides are equal in a parallelogram!

Answer:

C

Step-by-step explanation:

-4/5 is -0.8, which is at point C

plz brainliestt

Answer: C

Step-by-step explanation:

Point A is 4/5

Point B is -2/5

Point C is -4/5

Point D -1 4/5

Point D is