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anzhelika [568]
2 years ago
9

Simplify the expression (7+5)+4•13-2

Mathematics
2 answers:
Yakvenalex [24]2 years ago
7 0
Pemdas

Parentheses exponents multiplication divide add subtract (7+5)=12

12+4•13-2 4•13= 52

12+52-2
64-2

The answer is 62
Licemer1 [7]2 years ago
5 0

Answer: my answer is 62

Step-by-step explanation:

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The volume of the cone shown is 5 cubic inches. What is the height of a cone with the same base diameter but a volume of 10 cubi
MaRussiya [10]

Answer:

The height of the second cone is 2 <em>h</em>₁.

Step-by-step explanation:

The volume of a cone is:

V=\pi\ r^{2}\frac{h}{3}

The volume of the first cone is, <em>V</em>₁ = 5 in³.

The volume of the second cone is, <em>V</em>₂ = 10 in³.

The two cones have the same base diameters.

This implies that the two radii are same, i.e. <em>r</em>₁ = <em>r</em>₂.

Compute the height of the second cone as follows:

   r_{1}=r_{2}

\frac{3\cdot V_{1}}{\pi\ h_{1}}=\frac{3\cdot V_{2}}{\pi\ h_{2}}

  \frac{V_{1}}{h_{1}}=\frac{V_{2}}{ h_{2}}

  \frac{5}{h_{1}}=\frac{10}{h_{2}}

  h_{2}=2\ h_{1}

Thus, the height of the second cone is 2 <em>h</em>₁.

7 0
2 years ago
Plz help!............
prisoha [69]

Answer:

C

Step-by-step explanation:

B/c 0 is included in the range since it the origin of the graph and it then goes to negative infinity. This is why y has to be less than equal to 0 which means 0 is included and graph goes to negative infinity.

7 0
2 years ago
Read 2 more answers
Can someone help me on this
barxatty [35]

A) as the exponent decreases by one, the number is divided by 5

B) as the exponent decreases by one, the number is divided by 4

C) as the exponent decreases by one, the number is divided by 3

D) 4⁰ = 4 ÷ 4 = 1

    4⁻¹ = 1 ÷ 4 = \frac{1}{4}

    4⁻² = \frac{1}{4} ÷ 4 = \frac{1}{16}

E) 3⁰ = 3 ÷ 3 = 1

    3⁻¹ = 1 ÷ 3 = \frac{1}{3}

    3⁻² = \frac{1}{3} ÷ 3 = \frac{1}{9}


5 0
2 years ago
Lg(5x+10)+2lg3=1+lg(4x+12)<br>need them fast with steps
pashok25 [27]

Answer:

x=6

Step-by-step explanation:

log(5x+10)-log(4x+12)=1-2log(3)

log(5x+10/4x+12)=1-2log(3)

log(5x+10/4x+12)=log(10)+log(3^-2)

log(5x+10/4x+12)=log(10×3^-2)

log(5x+10/4x+12)=log(10×1/9)

log(5x+10/4x+12)=log(10/9)

5x+10/4x+12=10/9

9(5x+10)=(4x+12)10

45x+90=40x+120

5x=30

x=6

if you like my answer. Please mark me as brainliest

5 0
2 years ago
An airplane must clear a 60-foot pole at the end of a runway 500 yards long determine the angle of elevation at which the airpla
Marat540 [252]

Answer:

2.3 degrees.      

Step-by-step explanation:

Please find the attachment.

We are told that an airplane must clear a 60-foot pole at the end of a runway 500 yards long.

Let us convert 500 yards to feet.

1 yard= 3 feet.

500 yards= 3*500 feet= 1500 feet.

We can see from our attachment pole and runway are in form of a right triangle. The pole is opposite to angle of elevation of plane and length of runway is adjacent.

Since tangent represents the relation between opposite and adjacent of right triangle, So we will use tangent to find angle of elevation that plane must ascend to clear the pole.  

tan(\theta)=\frac{60}{1500}    

\theta=\tan^{-1}(\frac{60}{1500} )

\theta=\tan^{-1}(0.04)

\theta=2.290610042639

Therefore, the airplane must ascend 2.3 degrees to clear the pole.

8 0
2 years ago
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