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3 years ago

Please help me, I will award brainliest!!

Mathematics

1 answer:

UNO [17]3 years ago

5 0

Let's say x = hours washing cars and 13-x = hours walking dogs.

so 10*(x) + 9*(13-x) = 122, which is 10x + 9(13-x) = 122. that would be your system.

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(1) Tom took a trip of 1,020 miles. He traveled by train at 55 miles an hour and the same number of hours by plane at 285 mph.

Maurinko [17]

<h3>Answer:</h3>

B) 6 hours

<h3>Step-by-step explanation:</h3>

Let h represent the total trip time. Then h/2 is the time spent traveling at each speed. The distance covered is ...

... distance = speed · time

The sum of the distances in each mode is the total distance.

... 1020 = 55·h/2 +285·h/2

... 2040 = h·(55+285) . . . . multiply by 2

... 2040/340 = h = 6 . . . . . . . divide by the coefficient of h

The trip took a total of 6 hours.

4 0

3 years ago

What is the solution to this equation? –0.2(x – 20) = 44 – x

Airida [17]

Answer: x = 50

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

How do you find the slope of the points: (19,-16),(-7,-15)?

nirvana33 [79]

Answer:

$\Huge\boxed{\mathsf{\frac{1}{26} }}$

Step-by-step explanation:

SLOPE FORMULA:

$\longrightarrow \displaystyle \mathsf{\frac{Y_2-Y_1}{X_2-X_1} }}$

Y₂=(-15)

Y₁=(-16)

X₂=(-7)

X₁=19

Solve.

$\displaystyle \mathsf{\frac{(-15)-(-16)}{(-7)-19}=\frac{(-15)+16}{(-7)-19}=\frac{1}{-26}=\boxed{\mathsf{\frac{1}{26}} } }}}}$

So, the slope is 1/26.

8 0

4 years ago

Find the missing values in the ratio table below.

Nataliya [291]

Answer:

attachment

Step-by-step explanation:

Hi there !

trucks/cars = 2/3 = x/9 = 30/y

x = 2×9/3 = 18/3 = 6

y = 3×30/2 = 90/2 = 45

Good luck !

3 0

3 years ago

Irma has 5/6 yard of ribbon. She cuts it into 1/6 yard pieces.How many pieces of ribbon does she have

Aleksandr-060686 [28]

Answer: 1? idk use google :)

Step-by-step explanation:

3 0

3 years ago