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3 years ago

Y = 5x +7 y = 2x + 4 systems of equations

Mathematics

2 answers:

ratelena [41]3 years ago

7 0

I think the answer is 1

alexandr402 [8]3 years ago

3 0

X=1/5y+(-7)/5

hope this helps!

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The length of a rectangle is 5.5 feet. If the area is 44 square feet, what is the width of the rectangle, in feet?

vlabodo [156]

So area is length times width therefore
A=LW
44ft^2=5.5W
divide both sides by 5.5
44/5.5=Width=8 feet

7 0

3 years ago

Read 2 more answers

The shaded part of the diagram shows what tina had left from a yard of fabric.she now use 1/3 yard yard of fabric for one projec

ioda

Answer: Left over yard after the two projects is $\frac{1}{2}\ yards$

Step-by-step explanation:

Since we have given that

Number of yard of fabric for one project is given by

$\frac{1}{3}$

Number of yard of fabric for second project is given by

$\frac{1}{6}$

Total number of yards of first and second project is given by

$\frac{1}{3}+\frac{1}{6}\\\\=\frac{2+1}{6}\\\\=\frac{3}{6}\\\\=\frac{1}{2}\ yards$

Number of original of fabric Tina have left after the two project is given by

$1-\frac{1}{2}\\\\=\frac{2-1}{2}\\\\=\frac{1}{2}\ yards$

Hence, Left over yard after the two projects is $\frac{1}{2}\ yards$

8 0

4 years ago

What is the rate of change for the function in the table?

san4es73 [151]

Answer:

$2 per song

Step-by-step explanation:

When you buy 2 songs, you pay $4.

$4 ÷ 2 = $2

4 0

3 years ago

Read 2 more answers

DO NOT GIVE ANSWER! I just need an explanation.

finlep [7]

Hi there!

The range of a function describes its possible y-values. For example, y=x produces a linear graph. Its range is all real numbers, meaning that for any value of y, the function is defined.

However, for y=x², for example, the range is y>0, since there the graph doesn't travel to y-values less than 0. The function is only defined when y>0.

To find the range of the given functions, you can try graphing them. Or, if you've memorized the ranges of their parent functions, you can try to take that and apply transformations.

Answer for the first question:

f(x)=-√x

The parent function is f(x)=√x. The range of this is y≥0.

f(x)=-√x

Adding a negative in front of the square root reflects the function across the x-axis, meaning the range is therefore flipped too:

y≤0

I hope this helps!

8 0

3 years ago

The first gardener can finish the job in 6 hours, and the second gardener can do the same job in 7 hours. How long it will take

marissa [1.9K]

If the first gardener can finish the job in 6 hours, it means that every hour he completes 1/6 of the job.

By the same logic, the second gardener completes 1/7 of the job per hour.

So, if they work together, they complete

$\dfrac{1}{6}+\dfrac{1}{7}=\dfrac{7+6}{42}=\dfrac{13}{42}$

of the job per hour.

So, after 42/13 of a hour, they'll complete the job. Since one hour is made of 60 minutes, 42/13 of a hour is

$\dfrac{42}{13}\cdot 60 \approx 194$

So, it will take them about 194 minutes to finish the job, i.e. about 3 hours and 14 minutes.

8 0

3 years ago