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solmaris [256]
3 years ago
8

For what values of them will the expression below be a perfect square? 9x^2+30x+m

Mathematics
1 answer:
matrenka [14]3 years ago
4 0
I am so so so sorry I do not know the answer but I might later in the shool year
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Suppose 12% of students chose to study Spanish their freshman year, and that meant that there were 15 such students. How many st
Allisa [31]

Answer:

  110

Step-by-step explanation:

If 12% studied Spanish, then 88% did not. The ratio of those who did not to those who did is ...

  88 : 12 = 22 : 3

Then the number of students who did not study Spanish is ...

   (22/3)×15 = 110 . . . . did not study Spanish

7 0
2 years ago
Mary needs to buy bread and milk for her church picnic. At a supermarket A, she would pay $44.20. At supermarket B, she would pa
Nana76 [90]

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I need more information

Step-by-step explanation:

6 0
3 years ago
Find the area of the figure.
earnstyle [38]

Answer:

C. 70 in^2

Step-by-step explanation:

What you do is use the formula for finding the area of a trapezoid.

A=a+b/2(h).

a=8

b=12

h=7

A=8+12/2(7)=70 in^2 is your answer.

6 0
3 years ago
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Which of the lines graphed has a slope of -1/2 and a y-intercept of 3
MAXImum [283]

Answer:

The correct option is C).

Figure show the line with slope of -1/2 and a y-intercept of 3

Step-by-step explanation:

The equation of line is given by y=mx+c.

Where m is slope and c is y-intercept.

Given that line has slope

m=\frac{-1}{2} and c=3

Thus equation of line will be

y=mx+c.

y=\frac{-1}{2}x+3

To plot the line we need at least two points

Take x=0

y=\frac{-1}{2}x+3

y=\frac{-1}{2}0+3

y=3

The required point is A(0,4)

Take x=2

y=\frac{-1}{2}2+3

y=2

The required point is B(2,2)

Using this points to graph the given equation of line

Figure show the line with a slope of -1/2 and a y-intercept of 3

The correct option is C).

7 0
3 years ago
Ax-bx+y=z solve for x​
Vladimir [108]

Answer:

This question requires us to change the subject of a formula. This can be achieved by following the order of operations in reverse. First, isolate the terms with our variable of interest, x:

ax - bx = z - y

Then, we take x out as it is being multiplied to both a and b:

x(a - b) = z - y

Dividing (a - b) on both sides, we get:

x = (z - y) / (a - b)

Thus, the answer is x= z-y/a-b

Step-by-step explanation:

6 0
3 years ago
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