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-Dominant- [34]

3 years ago

8

How to substitute x=-2 and x=5 into 2x^2+6-20=0 to check my work

1 answer:

Komok [63]3 years ago

4 0

First answer (x=-2)
...
(2)[(-2)^2]+6-20
2(4)+6-20
8+6-20
14-20
<em>-6 (answer)
</em><em>
</em><em />Second answer (x=5)
...
(2)[(-5)^2]+6-20
2(25)+6-20
50+6-20
56-20
<em>36 (answer)
</em>Hope this helps!

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Bruno is sewing a large rectangular tablecloth for a restaurant. He has 30 square feet of fabric, and the length of the table cl

soldi70 [24.7K]

Answer:

4ft

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

The blue shape is a dilation of the black shape. What is the scale factor of the dilation?

GarryVolchara [31]

We are going to evaluate a vertex of both forms.
blue shape:
(-5.10)
black shape:
(-1,2)
As one figure is the dilatation of another then:
k (-1,2) = (- 5,10)
From here we know:
-k = -5
Equivalently:
2k = 10
Where we conclude:
k = 5
Answer:
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8 0

3 years ago

2. What is the length of AB? Round your<br> answer to the nearest hundredth.

GaryK [48]

Answer:

The required length of AB is 7.28 units.

5 0

2 years ago

What is the slope of the line below?<br><br> A. 1/2<br> B. 5<br> C. -1.5<br> D. -5/2

ololo11 [35]

Answer:

A 1/2

Step-by-step explanation:

(2, -1.5) & (4, -0.5)

To find the slope of the line, we use the slope formula: (y₂ - y₁) / (x₂ - x₁)

Plug in these values:

(-0.5 - (-1.5)) / (4 - 2)

Simplify the parentheses.

= (-0.5 + 1.5) / (2)

= 1 / 2

Simplify the fraction.

1/2

This is your slope.

Hope this helps!

4 0

3 years ago

the area of a rectangle is 30 to the square root of 3750 square inches, and the length is 3 to the square root of 250 inches. wh

uranmaximum [27]

<h3><u>Answer</u><u>:</u></h3>

$\sf { width =10 \sqrt{15} \:inches}$

<h3><u>Solution</u><u>:</u></h3>

<em>We are given that:</em>

Area of rectangle is 30√3570
Length of the rectangle is 3√250

<u>Area </u><u>of </u><u>rectangle </u><u>is </u><u>given </u><u>by:</u>

$\implies\quad{\pmb{ \sf{Area = length\times width}} }$

<u>Hence, putting the values in the formula:</u>

$\implies\quad \sf{ A = l\times w}$

$\implies\quad \sf{ 30\sqrt{3750}=3\sqrt{250}\times w}$

$\implies\quad \sf{3\sqrt{250}\times w = 30\sqrt{3750} }$

$\implies\quad \sf{ w =\dfrac{30\sqrt{3750}}{3\sqrt{250}}}$

$\implies\quad \sf{ w =10\dfrac{\sqrt{3750}}{\sqrt{250}}}$

$\implies\quad \sf{ w = 10\times\sqrt{\dfrac{3750}{250}}}$

$\implies\quad \underline{\underline{\pmb{\sf{ w =10\sqrt{15}}}}}$

8 0

2 years ago