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3 years ago

11

Does anybody know what 13-0.75(12)+8(1/2) is?

2 answers:

Ad libitum [116K]3 years ago

6 0

Answer:

8

Step-by-step explanation:

34kurt3 years ago

3 0

Answer: 8

Step-by-step explanation:

first multiply 0.75 X 12 and 8 X 0.5

which equals 9 and 4

then sub 13-9=4

then ad 4+4=8

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Math problem- find volume of cone -thank you

ryzh [129]

Answer:

V=125pi=125*3.14/3=130.83

Step-by-step explanation:

V=pi*5^2*5/3=125pi/3

5 0

3 years ago

Given: KLMN is a trapezoid m∠N = m∠KML

horrorfan [7]

Answer:

The length of sides KM, LM and KN are $\sqrt{109}, \frac{48}{5}$ and 16 respectively. The area of KLMN is $\frac{192\sqrt{5}}{5}$ square unit.

Step-by-step explanation:

According to given information: KLMN is a trapezoid, ∠N= ∠KML, $\frac{LM}{KN}=\frac{3}{5}$ , ME ⊥ KN, KE=8 $ME=3\sqrt{5}$ .

Use pythagoras theorem is triangle EKM

$Hypotenuse^2=base^2+perpendicular^2$

$(KM)^2=(KE)^2+(ME)^2$

$(KM)^2=(8)^2+(3\sqrt{5})^2$

$KM^2=64+9(5)$

$KM=\sqrt{109}$

Let angle N and angle KML be θ.

Since angle KML and angle MKE are alternate interior angles, therefore angle MKE is θ.

In triangle KME,

$\tan\theta=\frac{3\sqrt{5} }{8}$ .... (1)

In triangle KNE,

$\tan\theta=\frac{3\sqrt{5} }{EN}$ .... (2)

Equate (1) and (2),

$\frac{3\sqrt{5} }{8}=\frac{3\sqrt{5} }{EN}$

$EN=8$

The length of side KN is

$KN=KE+EN=8+8=16$

Sides LM:KN are in the ratio 3:5. Let the side lengths are 3x and 5x respectively.

$5x=16$

$x=\frac{16}{5}$

$3x=3\times \frac{16}{5}=\frac{48}{5}$

The area of KLMN is

$Area=\frac{1}{2}(b_1+b_2)h$

$A=\frac{1}{2}\times (LM+KN)\times ME$

$A=\frac{1}{2}\times (\frac{48}{5}+16)\times 3\sqrt{5}$

$A=\frac{192\sqrt{5}}{5}$

Therefore length of sides KM, LM and KN are $\sqrt{109}, \frac{48}{5}$ and 16 respectively. The area of KLMN is $\frac{192\sqrt{5}}{5}$ square unit.

6 0

4 years ago

Paul has two label-printing machines. Each machine can print 30 labels per minute. On day 1, only the first machine was used, an

lord [1]

Answer- 90 + 30x + 30y
Hope this helped! ;)

4 0

3 years ago

Read 2 more answers

Round each decimal to the place indicated 26.6

KIM [24]

Answer:

$27$

Step-by-step explanation:

$26.6 = 27 \\ that \: is \: when \: rounded$

6 0

3 years ago

-6-(-2n)=3n-6+5 what are the steps to get to what n equals

Aleks04 [339]

-6-(-2n)=3n-6+5
-6+2n=3n-6+5
-6+6-5=3n-2n
-5=n

6 0

3 years ago