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3 years ago

Solve the shape equation ?+(?+?)=13

1 answer:

6 0

If you would like to solve the equation ? + (? + ?) = 13, you can do this using the following steps:

? + (? + ?) = 13
? + ? + ? = 13
3 * ? = 13
? = 13/3
? = 4 1/3

The correct result would be ? = 4 1/3.

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What is the answer to this 25=-7(x+5)+5x

Aleksandr [31]

Answer:

x = -25

Step-by-step explanation:

25 = -7(x + 5) + 5x

25 = -7x - 25 + 5x

5x - 7x - 25 = 25

5x - 7x - 25 + 25 = 25 + 25

5x - 7x = 50

-2x = 50

-2x/-2 = 50/-2

x = -25

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3 years ago

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The slope for (0,7) and (7,7)

Softa [21]

Answer:

slope = 0

Step-by-step explanation:

point1 = (0,7)

point 2 =(7,7)

slope = (y2-y1)/(x2-x1) => (7-7)/(7-0)

slope = 0

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2 years ago

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4 The points (2, r) and (4, -8) lie on a line with slope - 1. Find the missing coordinate r.

maksim [4K]

R=-6

Mark brainliest please

Hope this helps you

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3 years ago

How much difference do a couple of weeks make for birth weight? Late-preterm babies are born with 34 to 36 completed weeks of ge

stiks02 [169]

Answer:

a) 0.3277

b) 0.0128

Step-by-step explanation:

We are given the following information in the question:

N(2750, 560).

Mean, μ = 2750

Standard Deviation, σ = 560

We are given that the distribution of distribution of birth weights is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P (less than 2500 grams)

P(x < 2500)

$P( x < 2500) = P( z < \displaystyle\frac{2500 - 2750}{560}) = P(z < -0.4464)$

Calculation the value from standard normal z table, we have,

$P(x < 2500) = P(z < -0.4464) = 0.3277 = 32.77\%$

b) P ((less than 1500 grams)

P(x < 1500)

$P( x < 1500) = P( z < \displaystyle\frac{1500 - 2750}{560}) = P(z < -2.2321)$

Calculation the value from standard normal z table, we have,

$P(x < 1500) = P(z < -2.2321) = 0.0128 = 1.28\%$

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2 years ago

15 pts + brainliest to right/best answer

ZanzabumX [31]

Rewrite it in the form a^2 - b^2, where a = 2x and b = 5

(2x)^2 - 5^2

Use the Difference o Squares: a^2 - b^2 = (a + b)(a - b)

(2x + 5)(2x - 5)

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3 years ago

Read 2 more answers