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VikaD [51]
3 years ago
9

Ive got a big maths test tomorrow ask me questions on fractions or percentages , formula , significant figures , Pythagoras anyt

hing
Mathematics
1 answer:
podryga [215]3 years ago
7 0
What 22/30 times 2/10
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Marcy determined that her father's age is the quotient of her age and 5, increased by 10. If x represents Marcy's age, write an
Hoochie [10]

Answer:

x / 5 + 10 or

Step-by-step explanation:

4 0
3 years ago
A rectangular garden has length and width as given by the expressions below.
Tom [10]

Answer:

P = -12xy - 56y - 42x + 8

Step-by-step explanation:

                                    P = 2L + 2W

P = 2(4 - 7(3x + 4y)) + 2(3x(-2y))

P = 8 - 14(3x + 4y) + 6x(-2y)

P = 8 - 42x - 56y - 12xy

                              P = -12xy - 56y - 42x + 8

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3 years ago
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Round to the given place value hundreds and tens 547 , 609 and 990
myrzilka [38]
The first number will be 500
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8 0
3 years ago
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What is the y value of the vertex 4x^2+8x-8
Oksana_A [137]

Answer:

The y-value of the vertex is -12

Step-by-step explanation:

we know that

The equation of a vertical parabola into vertex form is equal to

f(x)=a(x-h)^{2}+k

where

(h,k) is the vertex of the parabola

In this problem we have

f(x)=4x^{2}+8x-8 -----> this a vertical parabola open upward

Convert to vertex form

Group terms that contain the same variable, and move the constant to the opposite side of the equation

f(x)+8=4x^{2}+8x

Factor the leading coefficient

f(x)+8=4(x^{2}+2x)

Complete the square. Remember to balance the equation by adding the same constants to each side

f(x)+8+4=4(x^{2}+2x+1)

f(x)+12=4(x^{2}+2x+1)

Rewrite as perfect squares

f(x)+12=4(x+1)^{2}

f(x)=4(x+1)^{2}-12

The vertex is the point (-1,-12)

The y-value of the vertex is -12

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3 years ago
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Hey! i’ll give brainliest please help.
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I think the answer is A sorry if I’m wrong
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2 years ago
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