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3 years ago

Read the word problem.

Mathematics

2 answers:

Yanka [14]3 years ago

8 0

<h2>Answer:</h2>

The operations that are needed to solve this word problem and the order of operations is:

Addition and Multiplication, in that order.

<h2>Step-by-step explanation:</h2>

It is given that:

Kendra has 3 times as much money as her two younger siblings.

i.e. the sum of money both the siblings , he has three times of that sum.

Her younger brother has $10 and her younger sister has $4.

This means that the sum of money both younger siblings has is:

$ 10+$ 4 = $ 14.

Now, the money Kendra has is: 3 times of $ 14

i.e. 3×14=$ 42.

san4es73 [151]3 years ago

5 0

Answer:

Step-by-step explanation:

10 x 3 = $30

10 x 4 = $12

$30 + $12 = $42 in think thats the answer i havent been to school in a while

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PLEASE HELP!

Wittaler [7]

Answer:

See below

Step-by-step explanation:

Use the formulae directly

For a cone, with base radius = r and height = h, here are the related formula

$\textrm{Slant height l} = \sqrt{r^2 + h^2}$ (1)

$\textrm{Lateral surface area} = \pi r l$

$\textrm {Base area} = \pi r^2$

$\textrm { Total Surface Area SA} = \textrm{Base Area + Lateral Area} = \pi r^2 + \pi rl = \pi r(r + l)$ (2)

$\textrm{Volume V = } (1/3) \pi r^2h$ (3)

Therefore directly plugging in the numbers in the above equations:

Note:

l = slant height in cm
SA = total surface area in sqcm
V = Volume in cubic cm

Figure(a)

r = 4, h = 8

$\textrm{l} = \sqrt{4^2 + 8^2} =\sqrt{80} = 8.944 \\\textrm{SA} = 4\pi(4 + 8.944) = 4\pi(12.944) = 162.66\\\textrm{V} = (1/3)\pi(4^2)(8) = 134.04$

Figure(b)

r = 7, h =15

$\textrm{l} = \sqrt{7^2 + 15^2} =\sqrt{274} = 16.55$

$\textrm{SA} = 7\pi(7 + 16.55) = 517.89$

Figure (c)

r = 5, l = 8

$h = \sqrt{l^2 - r^2} = \sqrt{8^2 - 5^2} = \sqrt{39} = 6.245\\SA = \textrm{SA} = 5\pi(5 + 8) = 204.2\\V = (1/3)\pi(5^2)(6.245) = 163.5$

6 0

2 years ago

There are 5 chemistry, 6 physics, and 7 math teachers in a school. if 3 teachers are selected randomly, find the probability tha

mrs_skeptik [129]

77.2%

To find the probably and at least on you must find the probability of none and subtract from one.

The probability of none can be found like so:

(5+6 over 5+6+7)^3 = .228

1 - .228 = .772

Hope this helps!

6 0

3 years ago

Can you help me do this is hard but do not forget the 4

Mrac [35]

100+(34-(4+2)*3)/4

=100+(34-6*3)/4

=100+(34-18)/4

=100+16/4

=116/4

=29

29 is the answer

7 0

3 years ago

Read 2 more answers

Elizabeth practices the piano 1470 minutes in 5 weeks. If t represents the total time she practices for any number of days, d, w

castortr0y [4]

Answer:

294

Step-by-step explanation:

1470 diviend by 5 = 294.

8 0

3 years ago

Marco is building a dog house. He pays $65 for a dog house kit and $12 for each can of paint, p, he uses to paint the dog house.

mars1129 [50]

I believe the correct answer from the choices listed above is the last option. The function that represents the total cost to build the dog house would be <span>c(p)=12p+65. Hope this answers the question. Have a nice day.</span>

6 0

3 years ago

Read 2 more answers