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Lera25 [3.4K]
3 years ago
9

If 7x+5=-2, find the value of 8x?

Mathematics
1 answer:
Mama L [17]3 years ago
5 0
7x + 5 = -2
7x = -2 - 5 = -7
7x + x = -7 + x
8x = -7 + x
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Kevin is solving this problem. 737 × 205 What are the partial products Kevin will need to solve the problem? A. 3,685 and 147,40
Andrew [12]

the answer is A

700 x 5 = 3500

30 x 5 = 150

7 x 5 = 35

3500 + 150 +35 = 3685

700 x 200 = 140,000

30 x 200 = 6000

7 x 200 = 1400

140000 + 6000 + 1400 = 147400

6 0
2 years ago
What set of reflections would carry rectangle ABCD onto itself?
Furkat [3]
Answer: option <span>D) y=x, x-axis, y=x, y-axis</span>.

I first thought it was the option C) and I tried with it but it was wrong. This is how I dit it.

Option C step by step:

<span>1) Reflection over the x - axis => point with coordinates (a,b) is transformed into point with coordinates (a, -b)

2) Reflection over the line y = x  => point with coordinates (a, -b) is transformed into point with coordinates (-b,a)

3) New feflection over the x - axis => (-b,a) transforms into (-b, -a)

4) New reflection over the line y = x => (-b,-a) transforms into (-a,-b)

Which shows it is not the option C).

Then I probed with option D. Step by step:

1) Reflection over the line y = x => (a,b) → (b,a)

2) Reflection over the x-axis => (b,a) → (b,-a)

3) Reflection over the line y = x => (b,-a) → (-a,b)

4) Reflection over the y-axis => (-a,b) → (a,b).

So, this set of reflections, given by the option D) transforms any point into itself, which proofs that the option D) is the right answer.
</span>
7 0
3 years ago
I need help with question 7 <br><br> Find IK
Papessa [141]

Answer:

A. 46

Step-by-step explanation:

because IJ is 46 also and there both the same size.

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2 years ago
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H = B + 1

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30 = B(B + 1)
30 = B^2 + B
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B + 6 = 0
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B - 5 = 0
B = 5 <==== base is 5 cm

H = B + 1
H = 5 + 1
H = 6 <=== height is 6 cm

5 0
2 years ago
Simplify -(x-2y)-y I need help
tatiyna
The simplified version of this equation would be

-x + y
3 0
3 years ago
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