All categories

2 years ago

a first number plus twice a second number is 4. twice the first number plus the second number totals 26. find the numbers

Mathematics

1 answer:

blagie [28]2 years ago

3 0

Answer:

a = 16

b = -6

Step-by-step explanation:

a + 2b = 4

2a + b = 26

2a + 4b = 8

2a + b = 26

3b = -18

b = -6

a + 2(-6) = 4

a - 12 = 4

a = 16

You might be interested in

What is the solution of<br><br>log6x + log6(x + 5) = 2?

exis [7]

Answer:

Doesn't have solution.

Step-by-step explanation:

x ≠ 0; x > 0 (I)

x - 5 > 0

x > 5 (II)

$log_6 x + log_6 (x + 5) = 2 \\\ log_6 [x(x + 5)] = 2 \\\ x^2 + 5x = 36 \\\ x^2 + 5x - 36 = 0 \\\ \Delta = 5^2 - 4.1.(- 36) \\\ \Delta = 169 \\\ \sqrt{\Delta} = \pm 13 \\\ x' = \frac{- 5 + 13}{2} \\\\ x' = 4 \\\ x" = \frac{- 5 - 13}{2} \\\\ x" = - 9$

Then, this expression doesn't have solution.

I Hope I've helped you.

4 0

2 years ago

Read 2 more answers

Wanna show y'all the thiccc hamster !

34kurt

Answer:

oop

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Solve for X y and z brainliest Round to nearest tenth

kykrilka [37]

Answer:

x=1

Z=35.4965

assuming you want y to be the height, y=5.916

Step-by-step explanation:

x/height=height/35

35x=y^2

using Pythagorean theorem

y^2+x^2=6^2

y^2+35^2=z^2

substituting for y^2

35x+x^2=6^2

x^2+35x-36=0

(x+36)(x-1)=0

x=1

y^2+x^2=6^2

substitute

y^2+1=36

y^2=35

y=5.916

y^2+35^2=z^2

substitute

35+1225=z^2

z^2=1260

z=35.4965

4 0

2 years ago

What is 78.74 rounded to the nearest tenth?

sveticcg [70]

Answer:

The answer is <u>80</u>

Step-by-step explanation:

78.74 is closer to 80 than it is to 70.

4 0

2 years ago

Read 2 more answers

X^2- 6x - 7 = 0 can someone help me solve this by completing the square

Crazy boy [7]

I think it’s X=-3+(the square root of 2)

3 0

3 years ago

Read 2 more answers