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3 years ago

2. The solution of linear pair of equations 19x + 17y = 55 and 17x + 19y = 53 are

1 answer:

5 0

19(3) + 17(2) = 91 and 91 is not equal to 55

19(3) +17(-2) = 23 and 23 is not equal to 55

19(2) + 17(1) = 55 and also 17(2) + 19(1) = 53

So the answer is C.

Hope this helped :)

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What is the answer plz show your work <br> 5(k-2)-8k=-34

Rina8888 [55]

Let's solve your equation step by step.

5(k - 2) - 8k= -34

Step 1: Simplify both sides of the equation.

5(k - 2) - 8k= -34

(5)(k) = (5)(-2) + - 8k= -34 (Distribute)

5k + -10 + -8k = -34

(5k + -8k) + (-10) = -34 (Combine Like Terms)

-3k + -10 = -34

-3k - 10 = -34

Step 2: Add 10 to both sides.

-3k - 10 + 10 = -34 + 10

-3k = -24

Step 3: Divide both sides by -3.

-3k\3 =-24\-3

K= 8

Answer:
K=8

Hope this helps

7 0

4 years ago

Read 2 more answers

A farm stand sells apples, a for $4 a bucket and peaches, p, for $6 a bucket

almond37 [142]

Answer:

C is the correct option.

Step-by-step explanation:

According to the statement:

A farm stand sells apples, a for $4 a bucket and peaches, p, for $6 a bucket

The stand earned $192 revenue last month:.

Therefore the equation is:

4a+6p= $192

The stand sold twice as many peach buckets as apple buckets:

Thus p=2a.

4a+6p=$192 --------equation 1

p=2a -----equation 2

Hence the correct option is C....

5 0

3 years ago

Read 2 more answers

HELP with all questions PLEASE.

max2010maxim [7]

10 days for A by 1,000 m = 2 days 5x2=10 And for B it will be 9.75 kilometers on the thrid day because of .75x3=2.25 then put 7,500 meters to 7.5 kilometers then 7.5+2.25=9.75 kilometers on the third day. For C it would be plan B because it would 20 days to get 20 kilometers for A but plan B is two days ahead of A by taking 7.5x3=22.5=20 days 22.5-.75=21.35 21.35-.75=20.60. Hope this helps because it took me a while.

8 0

3 years ago

A customer buys a bag of cereal that costs $4.75 and pays the sales tax of

rosijanka [135]

Answer:

$4.68

Step-by-step explanation:

4.75+0.57=5.32

10-5.32=4.68

5 0

3 years ago

What are the solutions of the equation 9x4 – 2x2 – 7 = 0? Use u substitution to solve. tions of the equation 9

skelet666 [1.2K]

Answer:

Step-by-step explanation:

Let $u^2=x^4\\u = x^2$

Subbing in:

$9u^2-2u-7=0$

a = 9, b = -2, c = -7

The product of a and c is the aboslute value of -63, so a*c = 63. We need 2 factors of 63 that will add to give us -2. The factors of 63 are {1, 63}, (3, 21}, {7, 9}. It looks like the combination of -9 and +7 will work because -9 + 7 = -2. Plug in accordingly:

$9u^2-9u+7u-7=0$

Group together in groups of 2:

$(9u^2-9u)+(7u-7)=0$

Now factor out what's common within each set of parenthesis:

$9u(u-1)+7(u-1)=0$

We know this combination "works" because the terms inside the parenthesis are identical. We can now factor those out and what's left goes together in another set of parenthesis:

$(u-1)(9u+7)=0$

Remember that $u=x^2$

so we sub back in and continue to factor. This was originally a fourth degree polynomial; that means we have 4 solutions.

$(x^2-1)(9x^2+7)=0$

The first two solutions are found withing the first set of parenthesis and the second two are found in other set of parenthesis. Factoring $(x^2-1)$ gives us that x = 1 and -1. The other set is a bit more tricky. If