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borishaifa [10]
3 years ago
11

Help me please,Thanks

Mathematics
1 answer:
timofeeve [1]3 years ago
6 0
The area formula for a triangle is: ½b•h, where b is the base and h is the height. So half of the base, 4, is 2. Now multiply 2 by the height, 6. That will give you an answer of 12. I hope this was helpful!


A=½b•h

A=½4•6

A=2•6

A=12
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F(3) =-2x^2+9x+5 calculate the following
ElenaW [278]

Answer:

50

Step-by-step explanation:

2(3)^2+9(3)+5

2(9)+27+5

18+27+5

=50

8 0
3 years ago
if the value of x varies directly as the value of y , and x = 16 when y = 3/4 , what is the value of x when y = 3/8 ?
Olin [163]

Answer:

x=8

Step-by-step explanation:

If the value of x varies directly as the value of y we can say they are directly proportional. This implies that when y increases x will increase too, and when y decreases x will also decrease.

If x=16 when y=3/4 we can write their relation as:

x/y = 16/(3/4) = 16*(4/3) = 64/3

So, for every value of y, the ratio x/y must maintain equal to 64/3 because both values are proportional.

Now we can see what happens to x when y varies. If y=3/8:

x/(3/8) = 64/3

Multiply both sides by 3/8 to eliminate the 3/8 in the denominator.

x/(3/8) * (3/8) = (64/3) * (3/8)

See that we have a 3 multiplying and another dividing, we can eliminate them.

x = 64/8

x = 8

So, if y decreases to 3/8 x will decrease to 8. Notice that y is decreasing in a half as 3/8 is the half of 3/4, and x is also decreasing in a half from 16 to 8, what makes sense.

3 0
3 years ago
Could use help on this one! I'll send thanks and mark Brainiest at when finished to see who's correct.
sdas [7]

sqrt (3/10)

sqrt(3)/sqrt(10)

no sqrt in the denominator, so multiply by sqrt(10)/sqrt(1)

sqrt(3) sqrt(10)

-------------------

sqrt(10) sqrt(10)

sqrt(30)/10

Choice D


8 0
3 years ago
Four more than the quotient of a number and 5 is equal to 9
sweet-ann [11.9K]

Answer:

x=25

Step-by-step explanation:

x/5+4=9

x/5=9-4

x/5=5

x=5*5

x=25

4 0
3 years ago
What is 31/87 as a percentage?<br> Give your answer rounded to one decimal place.
kicyunya [14]

Answer:

35.6%

Step-by-step explanation:

31/87(100)

3100/87

35.6%

8 0
3 years ago
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