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3 years ago

Please answer all the questions

Mathematics

1 answer:

erik [133]3 years ago

5 0

Answer:

to find the volume multiply length times width times height.

Step-by-step explanation:

1.)9x16x3= 432

2.)15x12x17= 3,060

3.)7x6x10= 420

4.)19x17x13= 4,199

5.)1,232

6.) 864

7.) 1,260

8.) 384

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in a certain examination 52 candidate offers biology,60 offers history,96 offers maths, if 21 offered both biology and history,2

Naddik [55]

Answer: There are 135 candidates.

Step-by-step explanation:

we know that:

52 offer biology

60 offers history

96 offers maths

21 offered both biology and history

22 offered maths and biology

16 offered maths and history

if 7 candidates offered all the subject.

We want to find the total number of candidates.

We start by adding the numbers for each particular exam:

(52 + 60 + 96)

Now, there are 21 that offered both biology and history, then these 21 are counted in the 52 for biology and in the 60 for history, then we need to subtract 21 (because we are counting it two times)

(52 + 60 + 96) - 21

The same happens for the 22 that offered maths and biology, and 16 that offered maths and history, then we get:

(52 + 60 + 96) - 21 - 22 - 16

And there are another 7 that offered for the 3 subjects, then we are counting these 7 ones 3 times, this means that we need to subtract 7 two times.

then we get:

(52 + 60 + 96) - 21 - 22 - 16 - 7 - 7

This is the total number of candidates, if we solve the equation we get:

candidates = (52 + 60 + 96) - 21 - 22 - 16 - 7 - 7 = 135

So we can conclude that there are 135 candidates.

3 0

3 years ago

13. Add [-6-2 2] + [-3 2 1].<br> A. (-9-3-5]<br> B. [-3 0 3]<br> C. [-6 0 3]<br> D. [-9 0 3]

Tcecarenko [31]

Answer: The answer should be C if you were to add each point.

6 0

3 years ago

What is the equation of the axis of symmetry for the parabola y equals start fraction one over four end fraction left parenthesi

horsena [70]

For this case we have the following function:
y = 1/4 (x + 2) ^ 2 - 7
We derive the equation:
y '= 1/2 (x + 2)
Equaling zero we have:
1/2 (x + 2) = 0
We clear the value of x:
x + 2 = 0
x = -2
Answer:
The equation of the axis of symmetry for the parabola is:
x = -2

5 0

3 years ago

At a certain time of day 1.8m tall person standing next to the Washington monument cast a 0.7m shadow at the same time the Washi

mezya [45]

Answer:

169 m

Step-by-step explanation:

See the image below.

Line AB represents the monument and line BC its shadow

Line DB represents the man and Line BE it shadow.

The Sun’s rays are parallel, so AC||DE.

Then ∆ABC ~ ∆DBE

AB:BC::DB:BE

x/65.8 = 1.8/0.7 Multiply both sides by 65.8

x = 65.6 × 1.8/0.7

x = 65.6 × 2.571

x = 169 m

The height of the Washington monument is 169 m.

8 0

3 years ago

Which function is nonlinear?

RSB [31]

Answer:

option C

Step-by-step explanation:

if a function is linear then we know that the highest exponent is 1

so we just look for a function that doesn't have an exponent of 1 and that's option C which has an exponent of 4

4 0

3 years ago

Read 2 more answers