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madam [21]
3 years ago
8

Please healp me!!!!!​

Mathematics
2 answers:
shtirl [24]3 years ago
7 0
it’s the first one
MakcuM [25]3 years ago
3 0
The answer is A the first one
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Compare & contrast the graphs of y = 5x+9 and y - 5x=3
arlik [135]
They both run diagonally (compare)...
the <span>y = 5x+9 is moved 6 points to the left
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hope it works
3 0
3 years ago
. help needed please​
Anastasy [175]
In order to do this, we would use order of operations. First, Parentheses, which is division with fractions, so we would do KCF,keep it, change it, flip it. keep the first fraction, change the operation to multiplication, then flip the next fraction, making it -7/9 x 3/1. the answer would be -2.33. multiply that by -2, and you would get -4.66, which is your answer. PLEASE MARK BRAINLIEST IF HELPFUL! :))
5 0
3 years ago
The measures of the two equal angles of an isosceles triangle are 370 each, then the
e-lub [12.9K]

Answer:

something is incorrect in your question.

Step-by-step explanation:

The sum of all three angles in any triangle is only 180°.

5 0
3 years ago
A study of peach trees found that the average number of peaches per tree was 725. The standard deviation of the population is 70
TEA [102]

Answer:

She needs to sample 189 trees.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.025 = 0.975, so Z = 1.96.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

The standard deviation of the population is 70 peaches per tree.

This means that \sigma = 70

How many trees does she need to sample to obtain an average accurate to within 10 peaches per tree?

She needs to sample n trees.

n is found when M = 10. So

M = z\frac{\sigma}{\sqrt{n}}

10 = 1.96\frac{70}{\sqrt{n}}

10\sqrt{n} = 1.96*70

Dividing both sides by 10:

\sqrt{n} = 1.96*7

(\sqrt{n})^2 = (1.96*7)^2

n = 188.2

Rounding up:

She needs to sample 189 trees.

3 0
3 years ago
Y=(x-5)(x+1). What is the vertex of the parabola
dedylja [7]

Answer:

Rewrite in vertex form and use this form to find the vertex  

(h , k ) .  ( 2 , − 9 )

5 0
3 years ago
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