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Mathematics

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Lisa [10]2 years ago

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the answer

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Kaitlyn is sharpening a pencil that is 19 cm. Each time she sharpens it goes down 2.5 cm. If she sharpens her pencil 4 times. Ho

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Answer:

9 cm

Step-by-step explanation:

2.5x4=10

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2 years ago

50+x(greater than or equal to)300

nikdorinn [45]

Answer:

x ≥ 250

Step-by-step explanation:

Note that "greater than or equal to" looks like ≥

50 + x ≥ 300

Isolate the variable. What you do to one side, you do to the other. Subtract 50 from both sides.

x + 50 (-50) ≥ 300 (-50)

x ≥ 300 - 50

x ≥ 250

x ≥ 250 is your answer.

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Rocco is doing an internship with a local carpenter. He is making $11.50 per hour.

SSSSS [86.1K]

Answer:

1. 76.5 days 2. $57.69 per day

Step-by-step explanation:

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2 years ago

The bag was filled with red marbles and blue marbles in the ratio of 5:7. If there were 180 marbles in the bag,how many were red

SOVA2 [1]

You just have to multiply each number by 180 and that's how many you have of each color respectively

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2 years ago

Read 2 more answers

How to solve this problem by classifying systems of equations<br> 3x+4y=36<br> -5x=35-3y

marissa [1.9K]

Answer:

x=-32/29

$y=9\frac {24}{29}$

Step-by-step explanation:

3x+4y=36 Equation 1

-5x+3y=35 Equation 2

Multiplying equation 1 with 3 (value before y in equation 2) and equation 2 with 4 (value before y in equation 1) we obtain equations 3 and 4 as follows

9x+12=108 equation 3

-20x+12y=140 equation 4

Subtracting equation 3 from equation 4 we obtain

-29x=32

x=-32/29

To find the value of y, we substitute the value of x into equation 2 as initially given in the equation

-5(-32/29)=35-3y

-5(-32/29)-35=-3y

$y=9\frac {24}{29}$

7 0

2 years ago