3 years ago

What’s the answer to xy-5 at. X=5,y=2

Mathematics

2 answers:

GalinKa [24]3 years ago

7 0

Answer:

I believe it's "5".

Step-by-step explanation:

xy-5

5(2)-5

10-5

Nataly_w [17]3 years ago

6 0

Answer:

Step-by-step explanation:

5*2=10-5

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mash [69]

I say the answer is B. Bland

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3 years ago

What is the solutions to 0=x^2-x-6<br> two things <br> ,,quadratic equationz,,,

natita [175]

Answer:

x1=3. x2=-2

Step-by-step explanation:

$x = \frac{ - b + - \sqrt{b {}^{2} - 4ac } }{2a}$

b=-1

a=1

c=-6

$x = \frac{ - ( - 1) + - \sqrt{ {( - 1)}^{2} - 4 \times 1 \times ( - 6) } }{2 \times 1}$

$x = \frac{1 + - \sqrt{1 + 24} }{2}$

$x = \frac{1 + - \sqrt{25} }{2}$

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3 0

3 years ago

The expression 4x gives the perimeter of a square with a side length of x units. what is the perimeter of a square with a side l

egoroff_w [7]

4(5/7) or 20/7 would be the perimiter

6 0

3 years ago

A recent poll of 80 randomly selected Californians showed that 38% ( = 0.38) believe they are doing all that they can to conserv

Elanso [62]

The margin of error given the proportion can be found using the formula

$z* \sqrt{ \frac{p(1-p)}{n} }$

Where
$z*$ is the z-score of the confidence level
$p$ is the sample proportion
$n$ is the sample size

We have
$z*=2.58$
$p=0.38$
$n=80$

Plugging these values into the formula, we have:
$2.58 \sqrt{ \frac{0.38(1-0.38)}{80} } =0.14$

The result 0.14 as percentage is 14%

Margin error is 38% ⁺/₋ 14%

8 0

3 years ago

Read 2 more answers

Write a formula for this sequence: 8,-1,-10,-19

Romashka [77]

This is an arith. sequence, and the common difference is -9.

a(n+1) = a(n)-9, with a(1)=8. Thus, if we look at the first term, we see 8; subracting 9 from 8 produces the second term (-1).

4 0

3 years ago