4 years ago

The question is in the image

Mathematics

1 answer:

HACTEHA [7]4 years ago

7 0

Answer:

The first one

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask me in the comments below ;)

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What is the solution of the system ?Use substitution.<br> Y= -3x<br> X + y = -4

DedPeter [7]

I hope this helps you

x-3x= -4

-2x= -4

x=2

y= -3.2

y= -6

4 0

3 years ago

Convert to standard form of the equation into the slope intercept form -3x-5y=-15

Mamont248 [21]

Our goal is to get y by itself
We will first add 3x to both sides to get
-5y = 3x - 15
We will then divide both sides by -5 to get y by itself which becomes
y = -3/5x + 3

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3 years ago

A tree that grows 3 feet every 5 years is growing at a rate of ___ feet per year.

Anni [7]

Answer: 0.6

Reason: 3 divide by 5 is 0.6

8 0

3 years ago

Read 2 more answers

Previously 5% of mothers smoked more than 21 cigarettes during their pregnancy. An obstetrician believes that the percentage of

mr Goodwill [35]

Answer:

p value = 0.03514

Step-by-step explanation:

Hypotheses would be

$H_0: p = 0.05\\H_a: p$

(left tailed test at 10% level of significance)

Here p stands for the sample proportion of mothers smoked more than 21 cigarettes during their pregnancy.

Sample size =130

persons who smoked = 2

Sample proportion = $\frac{2}{130} \\=0.0154$

Assuming H0 to be true

Std error= $\sqrt{0.05*0.95/130} \\=0.01911$

p difference = -0.0346

Test statistic z=-1.81

p value = 0.03514

Since p is less than 0.10, significance level, we reject H0

4 0

3 years ago

Cual es la forma más simple al efectuar la operación indicada en la expresión (-3) (-12) ?

GaryK [48]

Answer:

Cual es la forma más simple al efectuar la operación indicada en la expresión (-3) (-12) ? this means What is the simplest way to perform the operation indicated in the expression (-3) (-12)?

Step-by-step explanation:

Multiply -3 by -12 and get 36. hope this was helpful.

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3 years ago