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PIT_PIT [208]
2 years ago
11

When x = 4, y = 1 x^2 + 3xy – 7y^2

Mathematics
1 answer:
densk [106]2 years ago
4 0

Answer:

21

Step-by-step explanation:

i worked out the problem

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Given PQR is congruent to STU, find the value of x​
lukranit [14]

Answer:X=15 Y=4

Step-by-step explanation:

1. PR=US or 3y=12 divide 3y by 3 and cancel 3 out then divide 12 and get Y=4.

2. QR=TU or 2x=30, divide 2x by 2 and cancel out 2, then divide 30 by 2 and get X=15.

3. PQ=ST or 64=4x+y or 64=4(15)+4 and get 64=64

8 0
2 years ago
What is 5+ (-5) ?????
jasenka [17]

Answer:0

Step-by-step explanation:

5-5= 0

The positive sign times the negative sign equals to a negative sign

5 0
2 years ago
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Which one describes the translation of f(x) to g(x) ?
liubo4ka [24]
Chose the first one,because f(x) move up 4 units to g(x)
8 0
3 years ago
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A square pyramid has a base length of 4 inches. The height of each triangular face is 12 inches. What is the surface area of the
Wittaler [7]

Answer:

The surface area of the given pyramid is 112 inches^{2}.

Step-by-step explanation:

Base length of the pyramid = 4 inches

Area of the base = length^{2}

                            = 4^{2}

                            = 16

Area of its base = 16 inches^{2}

Area of one of its triangular surface = \frac{1}{2} x base x height

                                 = \frac{1}{2} x 4 x 12

                                 = 2 x 12

                                 = 24 inches^{2}

Area of all its four triangular surfaces = 4 x 24

                                                       = 96 inches^{2}

surface area of the pyramid = sum of areas of all its surfaces

                                               = 16 + 96

                                       = 112 inches^{2}

The surface area of the given pyramid is 112 inches^{2}.

8 0
2 years ago
Select the correct solution set.
Ksju [112]

Answer:

{x | x ≤ -8}

Step-by-step explanation:

-7x ≥ 56

Divide each side by -7, remembering to flip the inequality since we are dividing by a negative

-7x/-7 ≤ 56/-7

x ≤ -8

4 0
2 years ago
Read 2 more answers
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