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3 years ago

A line that has a slope of 1/2 and passes through the point (-4,7)

Mathematics

1 answer:

Doss [256]3 years ago

7 0

Answer:

y= ½x+9

Step-by-step explanation:

Use desmos makes it easier

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Need help asap!! will give brainliest!!

frozen [14]

Answer:

X and Y = 4

Well, it's a right triangle. The red box means 90 degree angle. So I would say that all the sides are equal.

8 0

3 years ago

Read 2 more answers

Janna drank 0.7 liter of water before soccer practice and 0.70 liter of water after practice compare the two decimals using grea

maria [59]

0.7 Liters and 0.70 Liters are the same amount.

You can think of them as fractions: 7/10 and 70/100. Both of these mean the same. 7/10 is the simplest form of the number.

When you put zeros to the right of any number that is to the right of the decimal point, it will not change the value of the number.

0.7 L = 0.70 L

5 0

3 years ago

Over what interval is the function in this graph increasing?

Umnica [9.8K]

Answer:

B. -4 ≤ x ≤ 1.

Step-by-step explanation:

The function is increasing when the slope of the line is rising to the right.

Each division on the x axis has a value of 2

7 0

3 years ago

I need help the question is what is the are of the composite figure

AlladinOne [14]

Answer:

Option 4

Step-by-step explanation:

Area of a trapezoid = $\frac{1}{2}(b_1+b_2)h$

Here, $b_1$ and $b_2$ are the bases and 'h' is the height between the bases.

Area of the composite figure = Area of two trapezoids given

= $\frac{1}{2}(12+12)14+\frac{1}{2}(25+31)11$

= $\frac{1}{2}(24)(14)+\frac{1}{2}(56)(11)$

= 168 + 308

= 476 square ft

Option 4 is the answer.

3 0

3 years ago

You are trying to estimate the average amount a family spends on food during a year. In the past the standard deviation of the a

svetoff [14.1K]

Answer:

$n=(\frac{2.58(1000)}{50})^2 =2662.56 \approx 2663$

So the answer for this case would be n=2663 rounded up to the nearest integer

Step-by-step explanation:

We have the following info:

$ME = 50$ margin of error desired

$\sigma = 1000$ the standard deviation for this case

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (a)

And on this case we have that ME =50 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The critical value for 99% of confidence interval now can be founded using the normal distribution. The significance is $\alpha=0.01$ . And for this case would be $z_{\alpha/2}=2.58$ , replacing into formula (b) we got:

$n=(\frac{2.58(1000)}{50})^2 =2662.56 \approx 2663$

So the answer for this case would be n=2663 rounded up to the nearest integer

5 0

3 years ago