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mariarad [96]
3 years ago
14

Need help with these

Mathematics
1 answer:
max2010maxim [7]3 years ago
8 0

Answer:

2) a. radius of cone:

\frac{1}{3} \pi \: r {}^{2} h = 7.77

\frac{1}{3} ( \frac{22}{7} )( {r}^{2} )(4) = 7.77

\frac{88}{21} ( {r}^{2} ) = 7.77

{r}^{2}  = 7.77  \div   \frac{88}{21}

{r}^{2}  =  \frac{16317}{8800}

r =  \sqrt{ \frac{16317}{8800} }

r = 1.36 \: ft

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The value of the numerator of a particular fraction is one-half the value of its denominator. If the numerator is increased by 2
IgorC [24]

Answer:

14

Step-by-step explanation:

Let the original denominator be 2x.

The original numerator is x.

The original fraction is x/(2x).

The numerator is increased by 2, and the denominator is decreased by 2.

The new fraction is (x + 2)/(2x - 2).

The new fraction equals 3/4.

(x + 2)/(2x - 2) = 3/4

Cross multiply.

4(x + 2) = 3(2x - 2)

4x + 8 = 6x - 6

-2x = -14

x = 7

The original numerator was 7.

2x = 2(7) = 14

The original denominator was 14.

8 0
3 years ago
For every problem-solving activity it's crucial that no less than five alternatives be considered.
matrenka [14]
Yes this is true. For every problem-solving activity it's crucial that no less than five alternatives be considered.
4 0
3 years ago
Read 2 more answers
Help plz:)))I’ll mark u Brainliest
Vedmedyk [2.9K]

Answer:

ST = 8 m

Step-by-step explanation:

Since ∆PQR is congruent to ∆STU, therefore, the three sides of ∆PQR would be congruent or equal to the corresponding three sides of ∆STU.

PQ corresponds to ST.

Therefore, PQ is congruent to corresponding side ST, which is 8 m

ST = 8 m

5 0
3 years ago
Lines b and c are parallel. What is the measure of angle 6?
Lemur [1.5K]

Answer:

I think

Step-by-step explanation:

it is answers is m is 117

7 0
3 years ago
On a loan of $1200 at 15% annual interest, Shirley had to pay $135 interest. For how many months did she have the loan?
natulia [17]

Answer:

<u><em>9 months</em></u>

Step-by-step explanation:

Principal= P= $1200

Rate=R= 15%

Interest= I= $135

Time= T= ?

I=P*R*T/100

135= 1200*15*T/100

135*100=18000*T

13500/18000=T

T= 0.75 years

T= 0.75*12= 9 months

3 0
3 years ago
Read 2 more answers
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