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baherus [9]
2 years ago
7

Can someone help? Please :(

Mathematics
1 answer:
Arturiano [62]2 years ago
7 0
The answer is 64 took the test
You might be interested in
31. One February day, the low temperature in
crimeas [40]

Answer:

-2°F

Step-by-step explanation:

The starting temperature was -17°F. If the temperature rose 5°F per hour, and we're looking for the temperature after three hours, the change in temperature was +15°F.

-17 + 15 = -2°F

4 0
4 years ago
A line passes through the point (2, 10) and has a y-intercept of 4. What is the equation of the line?
KatRina [158]

Answer:

y=3x+4

Step-by-step explanation:

Hi there!

<u>What we need to know:</u>

  • Linear equations are typically organized in slope-intercept form: y=mx+b where m is the slope and b is the y-intercept (the value of y when x is equal to 0)

<u>1) Determine the slope (m)</u>

m=\frac{y_2-y_1}{x_2-x_1} where two points that the line passes through are (x_1,y_1) and (x_2,y_2)

We're given the point (2,10) and the y-intercept of 4. Recall that the y-intercept occurs when x is equal to 0. This means that the y-intercept occurs at (0,4), giving us our second point.

Plug these points into the equation

=\frac{10-4}{2-0}\\=\frac{6}{2}\\=3

Therefore, the slope of the line is 3. Plug this into y=mx+b

y=3x+b

<u>2) Determine the y-intercept (b)</u>

The y-intercept is given; it is 4. Plug this back into y=3x+b

y=3x+4

I hope this helps!

3 0
3 years ago
David writes that the ratio of girls toboys is 1:4 orl. He tells his teacher that one-fourth of the students are girls. Is David
Aneli [31]

Answer:

i think it is no

Step-by-step explanation:

because 1+4=5

and girls are one so i think it is 1/5

hopefully i am right

7 0
4 years ago
A gondola (cable car) at a ski area holds 50 people. Its maximum safe load is 10000 pounds. A population of skiers has a distrib
fenix001 [56]

Answer:   0.03855

Step-by-step explanation:

Given :A population of skiers has a distribution of weights with mean 190 pounds and standard deviation 40 pounds.

Its maximum safe load is 10000 pounds.

Let X denotes the weight of 50 people.

As per given ,

Population mean weight of 50 people = \mu=50\times190=9500\text{ pounds}

Standard deviation of 50 people =\sigma=40\sqrt{50}=40(7.07106781187)=282.84

Then , the probability its maximum safe load will be exceeded =

P(X>10000)=P(\dfrac{X-\mu}{\sigma}>\dfrac{10000-9500}{282.84})\\\\=P(z>1.7671-8)\\\\=1-P(z\leq1.7678)\ \ \ \ [\because\ P(Z>z)=P(Z\leq z)]\\\\=1-0.96145\ \ \ [\text{ By p-value of table}]\\\\=0.03855

Thus , the probability its maximum safe load will be exceeded = 0.03855

3 0
4 years ago
Extra points// mathematics
timurjin [86]

Answer:

B

Step-by-step explanation:

Givens

a = 2 sqrt(3)

b = 3 sqrt(2)

c = ?

Formula

a^2 + b^2 = c^2

Solution

  • (2sqrt(3))^2 = 2*2 * sqrt(3)*sqrt(3)
  • (2sqrt(3))^2  = 4 * 3
  • (2sqrt(3))^2  = 12
  • (3sqrt(2))^2 = 3 * 3 * sqrt(2)*sqrt(2)
  • (3sqrt(2))^2 = 9 * 2
  • (3sqrt(2))^2 = 18

(2sqrt(3)^2 + 3sqrt(2)^2 ) = c^2

4*3 + 9*2 = c^2

12 + 18 = c^2

c^2 = 30

sqrt(c)^2 = sqrt(30)

c = sqrt(30)

Answer

B

4 0
3 years ago
Read 2 more answers
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