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Sindrei [870]
3 years ago
8

Multiply the following fractions

Mathematics
2 answers:
stich3 [128]3 years ago
4 0
When you multiply a fraction you simply multiply the top two numbers or numerators and then you multiply the denominator or bottom number.

3/4 x 5/8 = 15/32
Sauron [17]3 years ago
3 0
This is the answer because 2×1=2 and 3×4=12 and that's how i got 2/12 as the answer

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A driver drove for 3 hours at a certain speed. If he drove 12 more miles at the same speed, the distance would be 132 miles. At
Zinaida [17]
Distance traveled in 3 hrs was (speed in mph)(3 hrs)

Then s(3 hrs) + 12 mi = 132 mi.

Therefore, 3s = 120, and s = 120 miles   /   3 hrs   = 40 mph (answer)
7 0
3 years ago
What is the value of the expression: x2 + y2 + x - y
Lelu [443]

Answer:    6

Step-by-step explanation:

x^2+y^2+x-y

Put x=-1 and y=1

(-1)^2+(3)^2+(-1)-(3)

1+9-1-3

10-4

6

8 0
3 years ago
Molly knows that 10% of 80 id 8. Based on this infomation shen claims that 30% of 80 is 32
Gala2k [10]
Shes is wrong because 30% of 80 is 24
5 0
3 years ago
Write 1/3 x^2 - 4x + 17 in vertex form
Svetradugi [14.3K]

Answer:

f(x)=−4(x+ 41 ) 2 − 4 11

Explanation:

The given function is

f(x) = - 4 {x}^{2} - 2x - 3f(x)=−4x 2 −2x−3

To write the function is vertex form, we need to complete the square.

We first factor -4 to get:

f(x) = - 4 ({x}^{2} + \frac{1}{2} x) - 3f(x−4(x2 + 21 x)−3

Add and subtract the square of half the coefficient of x.

f(x) = - 4( {x}^{2} + \frac{1}{2} x + \frac{1}{16} ) - \frac{1}{4} - 3f(x)=−4(x 2 + 21 x+ 16 1 )− 41 −3

We factor the perfect square trinomial and simplify to get:

f(x) = - 4( {x + \frac{1}{4} )}^{2} - \frac{11}{4}f(x)=−4(x+ 41 ) 2 − 4 11

8 0
3 years ago
What is an equation for the line perpendicular to y = 3x – 1 that passes through (-9, -2)?
FinnZ [79.3K]

Answer:

  • y = -1/3x - 5

Step-by-step explanation:

<u>Perpendicular lines have negative reciprocal slopes, so the line is:</u>

  • y = -1/3x + b

<u>Finding the value of b, using the given point (-9, -2)</u>

  • -2 = -1/3*(-9) + b
  • -2 = 3 + b
  • b = -2 - 3
  • b = -5

<u>The line is</u>

  • y = -1/3x - 5
3 0
3 years ago
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