3 years ago

ASAP please sorry if it'd small it was blurry close up!!!

1 answer:

4 0

She needs to answer 16 questions to get -80. (80÷5=16) but since she needs a smaller score than that to win the game, she then will have to answer more than 16 questions correctly. at least 17 to get less that -80. Hopefully I am understanding the question right.

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How many solutions exist for the given equation? StartFraction one-half left-parenthesis x plus 12 right-parenthesis equals 4 x

Firlakuza [10]

Answer:

One solution x = 2

Step-by-step explanation:

Given the equation:

$\dfrac{1}{2}(x+12)=4x-1$

Multiply this equation by 2:

$2\cdot \dfrac{1}{2}(x+12)=2\cdot (4x-1)\\ \\x+12=2(4x-1)$

Use distributive property:

$x+12=8x-2$

Combine the like terms:

$x+12=8x-2\\ \\x+12-12=8x-2-12\\ \\x=8x-14\\ \\x-8x=8x-14-8x\\ \\-7x=-14\\ \\7x=14\\ \\x=2$

Thus, this equation has one solution x = 2

7 0

3 years ago

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If a certain number is multiplied by five, the result is the same as twenty-one plus twice the original number. What is the valu

expeople1 [14]

7
7 times 5 = 35
21 + 14 (7*2) = 35

6 0

3 years ago

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A t-shirt increased in price by 1/4. After the increase it was £20. What was the original price of the t-shirt?

Licemer1 [7]

Answer:

£16

the t-shirt increased by 0.25. let's convert that to percentage

therefore it increased by 25%

By using cross multiplication we can write as follows:

125%=£20

100%=£ x

(100×20)/125= £16

8 0

2 years ago

Write the equation of a line that passes through the point (-1,5) and has a slope of -7. Your answer should be given in the form

Marysya12 [62]

Plug the values in the equation and find b
(x, y) and m = slope
$5 = ( - 7)( - 1) + b \\ b = - 2 \\ y = - 7x - 2$

4 0

3 years ago

Four people must stand in a row for a group photo. How many different ways can they be lined up for the photo?

Finger [1]

Answer:

they can be lined up from front,side, back

Step-by-step explanation:

if u line them by side their in a straight line and hips faced to camera,or smallest to tallest in face front camera or back point of view in jumping, or holding hands.

7 0

3 years ago