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2 years ago

Please please help :(

Mathematics

1 answer:

Vinvika [58]2 years ago

6 0

-6 7/8 /(-3 3/4)
55/8X4/15
11/6
1 5/6

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1+1=2 thats the answer first one to respond gets brainliest XD

dalvyx [7]

Answer:

meee

Step-by-step explanation:

plz meeeeemmmeeee

3 0

2 years ago

The American Water Works Association reports that the per capita water use in a single-family home is 74 gallons per day. Legacy

Lunna [17]

Answer:

Reject H0 since test statistic <-2.492

Step-by-step explanation:

Given that the American Water Works Association reports that the per capita water use in a single-family home is 74 gallons per day.

n = 25

x bar = 69

s= 8.3

std error = s/sqrt n = $\frac{8.3}{5} \\=1.66$

H0: $\bar x = 74$

Ha: $\bar x$

(Left tailed test at 5% significance level)

a) Reject H0 if t $\leq$ -2.492

b) Test statistic = mean difference/std error

= $\frac{69-74}{1.66} \\=-3.012\\$

=-3.01

df =24

c) Reject H0

6 0

2 years ago

4. Solve -3 = -2x + 1 by graphing.<br> Helpppppp

QveST [7]

Answer:

x=2

Step-by-step explanation:

-3 = -2x +1

+3 +2x = +2x +3

2x=4

divide them both by 2

x=2

3 0

2 years ago

Pls help me! 19 and 20.

Murljashka [212]

Answer:

See below ↓

Step-by-step explanation:

19.

$\frac{x-1}{2} - \frac{x-3}{5} - \frac{x-7}{10} + \frac{x-2}{5}$
$\frac{5(x-1)-2(x-3)-(x-7)+2(x-2)}{10}$
$\frac{5x-5-2x+6-x+7+2x-4}{10}$
$\frac{4x+4}{10}$
$\frac{2x+2}{5}$

20.

$\frac{2x+3}{2x} + \frac{x+3}{4x} - \frac{18x+6}{8x^{2} }$
$\frac{4x(2x+3)+2x(x+3)-(18x+6)}{8x^{2} }$
$\frac{8x^{2} +12x+2x^{2} +6x-18x-6}{8x^{2} }$
$\frac{10x^{2}-6}{8x^{2} }$
$\frac{5x^{2}-3}{4x^{2} }$

4 0

1 year ago

A=10,b=49.5,c=20<br><br><br> answer choices are yes or no

stira [4]

Well, if it is based off the Pythagorean Theorem, here is the formula: a squared plus b squared equals c squared. It also works with c squared minus a squared equals b squared. I hope this helps! Please mark me brainliest!

5 0

3 years ago