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shusha [124]
3 years ago
14

Solve the system of equations –2 + y = 14 and -5x – 7y=10 by combining the

Mathematics
1 answer:
pochemuha3 years ago
5 0

Answer:

Step-by-step explanation:

-2+y=14

-5x-7y=10

y=14+2

y=16

-5x-7(16)=10

-5x-112=10

    +112  +112

-5x=122

x=-24.4

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What is the solution to the equation One-fourth x + 2 = negative StartFraction 5 Over 8 EndFraction x minus 5? X = negative 8 x
Ede4ka [16]

Answer:

(A)x= -8

Step-by-step explanation:

One-fourth x + 2 = \frac{1}{4}x+2

\frac{1}{4}x+2=-\frac{5}{8}x-5

Next, we Expand the Left hand Side by multiplying each term in the bracket by 1/4

\frac{1}{4}x+\frac{2}{4}=-\frac{5}{8}x-5

Bringing terms with x to the left Hand Side i.e. collecting like terms

\frac{1}{4}x+\frac{5}{8}x=-5-2\\\\(\frac{1}{4}+\frac{5}{8})x=-7\\\\\frac{7}{8}x=-7

On Cross multiplying

7x = -7 X 8

x=-\dfrac{7*8}{7}\\

x=-8

5 0
3 years ago
Read 2 more answers
The ratio of dogs to cats in a shelter is 9:15.if the total number of cats and dogs is 96.how many dogs are there?
ch4aika [34]

There are 36 dogs in the shelter.

<h3>How to find the total number of dogs in the shelter?</h3>

The ratio of dogs to cats in the shelter is given as 9:15.

The total number of dogs and cats is given as 96.

Let the constant of proportionality be x.

The total number of dogs is 9x and the total number of cats is 15x.

This means that:

9x + 15x = 96

24x = 96

x = 4.

The total number of dogs in the shelter = 9 × 4

= 36

Therefore, we have found that there are 36 dogs in the shelter.

Learn more about ratios here: brainly.com/question/2914376

#SPJ4

6 0
2 years ago
1. 201 - (-8) - 231 =<br><br><br> 2.632+(-196)-(-23) =
lara [203]

Step-by-step explanation:

1) -22

2) -172.368

hope it helps

7 0
3 years ago
Read 2 more answers
The perimeter of a playing field for a certain sport is 174 ft. The field is a rectangle, and the length is 45 ft longer than th
Leno4ka [110]

Answer:

21 ft by 66 ft

Step-by-step explanation:

From the question,

P = 2(L+W)............... Equation 1

Where P = Perimeter of the playing Field, L = Length of the playing Field, W = width of the playing Field.

If the Length of the Field is 45 ft longer than the width,

L = 45+W............ Equation 2

Substitute Equation 2 into equation 1

P = 2(45+W+W)

P = 90+4W............. Equation 3

Given: P = 174 ft.

Substitute into equation 3

174 = 90+4W

4W = 174-90

4W = 84

W = 84/4

W = 21 ft.

Substituting the value of W into equation 2

L = 45+21

L = 66 ft.

Hence the dimensions of the playing field is 21 ft by 66 ft

3 0
3 years ago
Determine whether each pair of triangles is similar. Justify your answer.
tresset_1 [31]
M<J = m<N      ( alternate angles)
m<K = m<M    ( alternate angles)

so the third angles must also be equal  ( total 180 degrees in each triangle)

Therefor the triangles are similar
7 0
3 years ago
Read 2 more answers
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