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3 years ago

Please help ill give brainliest

Mathematics

2 answers:

sweet [91]3 years ago

7 0

Answer:

Step-by-step explanation:

it is the only one that is correct

quester [9]3 years ago

4 0

The answer is c because you need to add 4 to both sides to cancel it out. Then you divide by 7 on both sides to get x by itself and reveal the answer.

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Hellllllllllppppppppppppppppplpppp

wariber [46]

(-4,0)
(2,0)
(2,0)
You set the equation equal to zero and you get -4,2,2 and if u plug this numbers in to get y then you get 0

4 0

3 years ago

Read 2 more answers

The average age at which adolescent girls reach their adult height is 16 years. Suppose you have a sample of 29 adolescent girls

kumpel [21]

Answer:

standard error = 1.63

Step-by-step explanation:

To calculate the standard error we need to know the standard deviation (σ) and the sample size (n) (see the attached formula).

To obtain the standard deviation we use the given sample variance of 77.4 years:

σ²= variance

Therefore:

σ = √77.4 = 8.8

Now we can calcuate the estimated standard error:

standard error = σ /√n = 8.8/√29 = 1.63

The standard error gives us an estimation about how far the mean of the sample is from the mean of the entire population, and in this case is 1.63.

7 0

3 years ago

10 POINTS!!! FULL ANSWER WITH FULL STEP BY STEP SOLUTION PLEASE. DO BOTH PARTS OF 1 AND ALL OF 2.

diamong [38]

One A
y = e^x
dy/dx = e^x The f(x) = the differentiated function. Any value that e^x can have, the derivative has the same value. x is contained in all the reals.
One B
y = x*e^x
y' = e^x + xe^x Using the multiplication rule.
You want the slope and the value of the of y to be the same. The slope is y' of the tangent line
xe^x = e^x + xe^x
e^x = 0
This happens only when x is very "small" like x = - 4444444

y = e^x * ln(x) Using the multiplication rule again, we need the slope of the line with is y'
y1 = e^x
y1' = e^x
y2 = ln(x)
y2' = 1/x
y' = e^x*ln(x) + e^x/x So at x = 1 the slope of the line =
y' = e^1*ln(1) + e^1/1
y' = e*0+e = e
y = mx + b
y = ex + b
to find b we use y= e^x ln(x)

e^x ln(x) = e*x + b
e^1 ln(1) = e*1 + b
ln(1) = 0
0 = e + b
b = - e

line equation and answer.
y = e*x - e

8 0

4 years ago

In the diagram below, ABC~ DEC. What is the value of x?

pishuonlain [190]

The value of x will be 3

From given diagram, triangle ABC and EDC meet at a common vertex C.

So, triangle ABC and EDC both are congruent to each other.

Applying the similarity property of congruence, ratio of the congruent triangles' corresponding sides will be equal.

Therefore,

$\frac{AB}{ED} = \frac{AC}{EC} = \frac{BC}{CD}$

$\frac{AC}{EC} = \frac{BC}{CD}$

Simplifying the expression,

We get

(18-x)/x = 25/5

(18-x)/x = 5

18-x = 5x

18-x-5x = 0

18 - 6x = 0

- 6x = -18

x = 3

Hence, the value of x is 3.

Learn more about congruent triangle here:

brainly.com/question/2938476

#SPJ10

3 0

2 years ago

Write a function rule for finding the amount of daily pay, p, in the following situation: A bus driver gets paid $85 each day pl

charle [14.2K]

1) Total pay = $85 + ($0.15/mile)m, where m is the # of miles driven.

2) 10 miles: $85 + $1.50 = $86.50

35 miles: $85 + $5.25 = $90.25

100 miles: $85 + $15 = $100

250 miles: $85 + $37.50 = $122.50

4 0

3 years ago