All categories

4 years ago

Please answer this correctly

Mathematics

2 answers:

belka [17]4 years ago

6 0

Answer:

v = 50

Step-by-step explanation:

The trapezoids are similar, so set up a proportion like so:

$\frac{56}{v} =\frac{84}{75}$

→Cross multiply:

$\frac{4200}{84v}$

→Divide 4200 by 84:

v = 50

natita [175]4 years ago

5 0

Answer:

50 km

Step-by-step explanation:

As the figures are given similar ,

56/v = 84/75

v = 56 × 75/84

v = 50 km

You might be interested in

How to do division with arrays?

MariettaO [177]

okay honey just divide 364 by 26 which is 14

i believe this is the answer

hope i helped.

6 0

3 years ago

−3x+2y=56 −5x−2y=24

Lady_Fox [76]

-3x+2y=56
-5x-2y=24

so first we want to get rid of one variable, in this example we dont need to multiply because the y's cancel out

so we have

-8x=80

x=-10

now plug in x into an original equation

-3(-10)+2y=56
2y=26
y=13

hope that helps

7 0

3 years ago

The fuction a (n) = 3n-7 represents the value of the nth term in a sequence. What is the sum of the 1st and 5th terms of the seq

Luba_88 [7]

Answer:

1st term: -4
5th term: 8

Step-by-step explanation:

Put the appropriate values of n in the formula and do the arithmetic.

a(1) = 3·1 -7 = -4

a(5) = 3·5 -7 = 8

The 1st and 5th terms are -4 and 8.

_____

The first few terms of the sequence are ...

-4, -1, 2, 5, 8, 11, 14, ...

4 0

3 years ago

What is 9/12a = 1 ? Also what is 6/5b = 1 ? And Finaly what is 12c = 1 ?

ivolga24 [154]

Step-by-step explanation:

hope I understand your question

a = 9/12

b = 6/5

c = 1/12

please simplify the fractions by yourself

4 0

3 years ago

What is the greatest common factor of the terms of the polynomial 12x^4 - 6x^3 + 9x^2

choli [55]

Answer:

$3x^{2}$ is the greatest common factor of the polynomial.

Step-by-step explanation:

Given:

The polynomial is $12x^{4} - 6x^{3} + 9x^{2}$

In order to determine the greatest common factor of all the terms, we find the greatest common factor of the coefficients separately and greatest common factor of the variables separately.

So, factors of 12 = 1, 2, 3, 4, 6, 12

Factors of 6 = 1, 2, 3, 6

Factors of 9 = 1, 3, 9

Therefore, the greatest common factor among 12, 6, and 9 is 3.

Now, factors of $x^{4}$ = $1, x, x^{2}, x^{3}, x^{4}$