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2 years ago

Four times a number plus three the sum of the same number and four is equal to negative nine. Find the number

Mathematics

2 answers:

dybincka [34]2 years ago

8 0

If I understood given text quite well than equation will be

4x + 3 (x+4) = -9 => 4x+3x+12=-9 => 7x=-21 => x=-21/7=-3 => x= -3

Good luck!!!

tankabanditka [31]2 years ago

7 0

Answer:

4x + 3 (x+4) = -9 => 4x+3x+12=-9 => 7x=-21 => x=-21/7=-3 => x= -3

Step-by-step explanation:

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How many child tickets were sold that day?

ExtremeBDS [4]

$\huge\boxed{\fcolorbox{black}{red}{Answer}}$

first let's name a couples of variable

• the number of adults tickets sold: a

• the number of children tickets sold: c

From the problem we know

a + c = 128

and

$5.40c + $9.20a = $976.20

1) solve the equation to alpha

a+c-c = 128 -c

a+0=128-c

a=128-c

2) substitute (128 - c) for a in the second equation and solve to c

$5.40c + $9.20a = $976.20 become

$5.40c + $9.20(128 - c) = $976.20

$5.40c + ($9.20 × 128) - ($9.20 - c) = $976.20

$5.40c - $9.20c + $ 1177.6 = $976.20

($5.40 - $9.20)c +$1177.6 = $976.20

-$3.80c + $1177.6 = $9.76.20

-$3.80c + $1177.60 - $1177.60 = $976.20 - $1177.60

-$8.30c + 0 = $201.40

-$3.80c = - $201.40

-$3.80c. -$201.40

________. = _________

-$3.80. -$3.80

-$3.80c. -$201.40

________. = _________. - they are 4 cut the no

-$3.80. -$3.80

c = $201.40

________

3.80

c = 53

3 0

2 years ago

Identify the graph of the inequality 2(2x - 1) + 7 < 13 or -2x + 55-10.

lutik1710 [3]

Answer:

The answer is the last one.

Step-by-step explanation:

Firstly, look at the first inequality and we get $4x+5$ , so $x$ . In the second inequality, we have $15\leq 2x$ , so $x\ge 7.5$ . Together, we know that the answer is the last one.

3 0

2 years ago

Deandre's goal is to find a job that provides an income of at least $75,000 a year. Ashley's Furniture offers him a job paying a

alekssr [168]

Answer:

at least $1,050,000

Step-by-step explanation:

Deandre's salary will be ...

12000 + 0.06·sales

He wants that to be at least 75000, so the sales must meet the requirement ...

12000 + 0.06·sales ≥ 75000

0.06·sales ≥ 63000 . . . . . . . . . . . . subtract 12000

sales ≥ 63000/0.06 . . . . . . . . . . . .divide by 0.06

sales ≥ 1,050,000 . . . . . . . . . . . . . .evaluate

He will need to have at least $1,050,000 in total sales to have a yearly income at least $75,000.

3 0

2 years ago

Suppose that in a large class, the instructor announces that the average grade on an exam is 75. Which is more likely to be clos

Tanya [424]

Answer:

The student's z-score will not change

Explanation:

Z-scores are used to compare results of an individual or entity to the average population's scores.

Since the adjustment of additional points is added to each class member's score, the adjustment will shift the entire distribution of scores. However, there will not be a change in the relative position of the student's score in the class. As a result, the student's z-score will not change.

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2 years ago

Suppose you start with a full tank of gas (14 gallons) in your truck. After driving 4 hours, you now have 4 gallons left.

laiz [17]

Answer:

4=m4-1

Step-by-step explanation:

This is because you're using gas so you're slope of the equation will have to be negative. If correct please mark brainliest. thx

3 0

3 years ago