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4 years ago

Substitution 3x-y=4 x=4y+17

2 answers:

Elena-2011 [213]4 years ago

8 0

The answer to this equation is -1/11 , -47/11. Solve for the first variable in one of the equations, then substitute the result into the other equation.

Sonja [21]4 years ago

4 0

3(4y+17)-y=4
12y+51-y=4
11y+51=4
11y=-47
y=-47/11

x=4(-47/11)+17
x=-188/11+17
x=-1/11

hope this helps!

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An architect planned to construct two similar stone pyramid structures in a park. The figure below shows the front view of the p

Sav [38]

Since the architect wants similar figures, it comes from the definition of similar triangles that the ratio of corresponding sides (all 3 sides) should be equal.

So,

$\frac{7.5}{6}= \frac{5}{4}= \frac{10}{CB}$ .

Let's find CB.

$\frac{7.5}{6} =\frac{5}{4}= \frac{10}{CB}\\ 1.25=1.25=\frac{10}{CB}\\ 1.25=\frac{10}{CB}\\ 1.25CB=10\\CB=\frac{10}{1.25}\\ CB=8$

So, CB should be 8. Option C is correct.

ANSWER: Change the length of side CB to 8 feet

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3 years ago

Read 2 more answers

a jewelry store buys 24 necklaces for $300. the store wants to make a profit of $540. assuming it sells all 24 necklaces, how mu

Serga [27]

If its meaning making a profit after the $300 then:
540+300=840
840/24= 33.60
They would charge $33.60 per necklace.

If you were meaning a profit of $540 total then:
540/24=22.5
They would charge $22.50 per necklace.

3 0

4 years ago

Could ya’ll please help me???

Alenkinab [10]

Answer:

$35.90

Step-by-step explanation:

It is easy homie

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3 years ago

The perimeter of a square is 3/4 meters. What is the measure of its length in meters

telo118 [61]

Answer:The answer is 0.1875, or 3/16 (in fraction form)

Step-by-step explanation: 3/4 divided by 4, (a square is equal on all 4 sides)

And there you have it!!!

<em>You're welcome :D</em>

5 0

4 years ago

What numbers make this expression undefined x^2+3/x^2-11x-12

marusya05 [52]

$\frac{ {x}^{2} + 3}{ {x}^{2} - 11x - 12}$

Because which numbers will make the expessions undefined. We will focus on the denominator only.

Factor the terms.

$(x - 12)(x + 1)$

Now which 2 numbers that will make these terms become 0?

12 and - 1 of course.

So these 2 numbers that will make the expressions undefined are 12 and - 1

5 0

3 years ago