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11111nata11111 [884]
3 years ago
14

За + 4a = -21 Solve the problem

Mathematics
1 answer:
Serga [27]3 years ago
6 0

Answer:

a = -3

Step-by-step explanation:

3a + 4a = -21

3a + 4a = 7a

7a = -21     Divide both side with 7

-21 / 7 = -3

a = -3

To make it true...

3(-3) + 4(-3) =

-9 + (-12) = -21

-21 = -21

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Enter an equation in standard form for the line.<br> Slope is -4, and (-9, -12) is on the line.
AfilCa [17]

Answer:

4x + y +48=0

Step-by-step explanation:

We are here given the slope of the line and one point through which it passes . The slope of the line is -4 and the point is (-9,-12) .

Here we can use the point slope form of the line as ,

\sf\longrightarrow y-y_1 = m(x-x_1)

Substitute the respective values ,

\sf\longrightarrow y - (-12) = -4\{ x -(-9)\}

Simplify LHS and RHS ,

\sf\longrightarrow y + 12 = -4( x +9)

Open the brackets in RHS ,

\sf\longrightarrow y + 12 = -4x -36

Add 36 and 4x to both sides ,

\sf\longrightarrow \underline{\boxed{\orange{\sf  4x + y + 48 =0}}}

8 0
3 years ago
7:( 4/11 m)=56:3.2 solve.
vazorg [7]

Answer:

m= 1.1

Step-by-step explanation:

Given the question as 7:( 4/11 m)=56:3.2 this can be written as;

7: 4/11 m = 56 /3.2

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77*32=560*4/11m

224=2240/11 m

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224/203.636 = 203.636m/203.636

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Testing the value of m in the question

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7:0.4 = 56 :3.2

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17.5 =17.5

4 0
4 years ago
The beginning balance on the monthly bank statement for Sierra's checking
irga5000 [103]

Answer:

A. She had $170.47 more in debits than in credits.

Step-by-step explanation:

In a bank account, when money is deposited, the bank credits the bank accounts while a withdrawal is debited to the account hence, if the monthly bank statement for Sierra's checking  account was $402.22, and the ending balance was $231.75, the change in the account is

= $402.22 - $231.75

= $170.47

Since there was a drop in the balance comparing the beginning and ending balances, it means there were more withdrawals than deposits (in amount).

8 0
3 years ago
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Harlamova29_29 [7]

Answer:

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Step-by-step explanation:

add all the colours together.

3 + 6 + 5 = 14

put the colour u want over the total number, to make a fraction then simplify

I hope it's right

4 0
3 years ago
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Answer:

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Step-by-step explanation:

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