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ella [17]
2 years ago
5

Please Help I can't get this wrong

Mathematics
1 answer:
goblinko [34]2 years ago
5 0

Answer:

C

Step-by-step explanation:

because u need x and y component

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Zake made a scale drawing of the elementary school . The schoolyard is 120 millimeters long in the drawing . The actual schoolya
Vitek1552 [10]
I think the answer is 4m
7 0
2 years ago
Read the problem and answer the questions show your solution when necessary. ​
Alexandra [31]

Answer:

Step-by-step explanation:

1) Number of white chocolate bars = x

Number of dark chocolate bars = y

Total bars = 15

x + y = 15 --------------(I)

Total cost = Php. 340

20x + 25y = 340 ----------------(II)

2)  We can use elimination method to solve this equations.

Multiply equation (I) by (-20) and then add the equations.

(I)* (-20)          -20x  -20y = - 300

(II)                    <u>20x + 25y = 340 </u>     {Now add and x will be eliminated}

                                  5y = 40

                                    y = 40/5

y = 8

Substitute y = 8 in equation (I)

x + 8 = 15

      x = 15 - 8

x = 7

3) Number of dark chocolate bars = 8

4 0
3 years ago
If the population of a certain city increased 25% in two years, the new population was what percent of the old?
disa [49]

Answer:

125%

Step-by-step explanation:

This because if in origin the city was made up for example by 100,000 people, that was the 100% of the city. Now you add the 25% in two years and the city will be made by 125,000 people. So <em>100%+25%=125%</em><em>.</em><em> </em>

I think it's right

7 0
3 years ago
<img src="https://tex.z-dn.net/?f=2%20%7Bx%7D%5E%7B2%7D%20%20-%205x%20%3D%207" id="TexFormula1" title="2 {x}^{2} - 5x = 7" alt=
FinnZ [79.3K]

Answer:

x = -7/2 or x =1

Step-by-step explanation:

2xx - 5x - 7 = 0

2x(x - 1) + 7(x - 1) = 0

(2x +7) (x -1) = 0

x = -7/2 or x =1

4 0
3 years ago
Find the area of the shaded region. The graph depicts the standard normal distribution with mean 0 and standard deviation 1
Digiron [165]

Answer:

P(z

And the best option would be:

0.8708

Step-by-step explanation:

We assume that the distribution for the random variable is:

X \sim N (\mu=0 , \sigma=1)

For this case we want to calculate the following probability:

P(z

And we can use the normal standard distribution or excel and we got:

P(z

And the best option would be:

0.8708

8 0
3 years ago
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