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3 years ago

HELP please can you answer this please

Mathematics

2 answers:

Akimi4 [234]3 years ago

8 0

Answer:

1. 2x² - 8x - 7

2. x³+ x + 30

Step-by-step explanation:

Mnenie [13.5K]3 years ago

8 0

$2 {x}^{2} - 9x - 2 +x - 5$

$2 {x}^{2} - 8x - 7$

2x² has no other like terms to add or substract with so it stays as is.

(-9x) + x = -8

(-2) - 5 = -7

(-2) - (-5) = 3

Watch out for the ones on top. I'm a bit confused about them but those ones are your possible options.

${x}^{3} + 27 + x + 3$

${x}^{3} + x + 30$

x³ stays as is and so does x.

27 + 3 = 30

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A baby gains 11 pounds in its first year of life. The baby gained 4 1/4 pounds during the first four months and 3 1/2 pounds in

Ede4ka [16]

Answer:

3.25 pounds

Step-by-step explanation:

x + 4 (1/2) + 3 (1/2) = 11

x + 4.25 + 3.5 = 11

x + 7.75 = 11

x = 11 - 7.75

x = 3.25 pounds

8 0

3 years ago

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AysviL [449]

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3 years ago

If a right isosceles triangle has an area of 192 cm, what is the height of the triangle?

xxMikexx [17]

The height of the triangle is 19.596 centimeter, if a right isosceles triangle has an area of 192 square centimeters.

Step-by-step explanation:

The given is,

Area of right isosceles triangle is 192 square centimeters

Step:1

Formula for area of right isosceles triangle is,

$A=\frac{1}{2} a^{2}$ ............................(1)

Where, a - Sides of triangle

a = h = b

Here, h - Height of triangle

b - Base of triangle

From given,

Area, A = 192 square centimeters

Equation (1) becomes.

$192=\frac{1}{2} a^{2}$

$a^{2} = (2)(192)$

= 384

$a^{2} = 384$

Take square root on both sides,

$a=\sqrt{384}$

a = 19.596 centimeters

Height of right isosceles of triangle, a = h = 19.596 centimeters

Result:

The height of the triangle is 19.596 centimeter, if a right isosceles triangle has an area of 192 square centimeters.

7 0

4 years ago

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melomori [17]

Answer:

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Step-by-step explanation:

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3 years ago

What is the image of -1 - 5 after a dilation by a scale factor of 5 centered at the origin

amm1812

the Given data

*The given point is (-1, -5)

*The given scale factor is 5

The image of -1 - 5 after dilation by a scale factor of 5 centered at the origin is given as

$(-1,-5)=(-1\times5,-5\times5)=(-5,-25)$

Thus, the image after dilation by a scale factor of 5 centered at origin is (-5, -25)

6 0

2 years ago