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quester [9]
3 years ago
11

I'm failing my math class and need help ):

Mathematics
1 answer:
jek_recluse [69]3 years ago
8 0
Take first number as x
 <span />second number is 3x
 <span />third number = 3x+5 <span> </span>

<span> </span> twice the third is 5 less than second, means second minus 2 times third is equal to five or 3x-2(3x+5)=5..........Answer is D
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Explain why the following problem will have an irrational answer.
Inessa [10]

Answer:

The sum is a Non-repeating.

Step-by-step explanation:

I have no clue how to solve this question or fractions for that matter.

I literally guessed and go it right. (Somehow)

7 0
3 years ago
Triangle ABC is an isosceles triangle. Angles B and C are base angles, with measurements of (11x −10)° and (7x + 10)°, respectiv
Ulleksa [173]

Answer:

m∠A = 90°

Step-by-step explanation:

In isosceles triangle base angles are congruent. That means we can equate measurments of angle B and angle C and solve for x!

m∠B = m∠C

11x - 10 = 7x + 10

4x - 10 = 10

4x = 20

x = 5

Now let's insert x back in the expressions for angles.

m∠B = (11x − 10)° = (11(5) − 10)° = 45°

m∠C = (7x + 10)° = (7(5) + 10)° = 45°

<u>Sum of all angles in the triangle is 180°.</u> Let's make an equation.

m∠A + m∠B + m∠C = 180°

m∠A + 45°+ 45° = 180°

m∠A  = 90°

7 0
2 years ago
Which of the following is equivalent to the expression below?
Ludmilka [50]
= x(8 -8) +(10 +13)
= 0 +23
= 23

Selection D is appropriate.
8 0
3 years ago
It cost $4 to enter a fair. Each ride costs $2.50. You have 21.50. How many rides can you go on
jekas [21]

Answer:

7 rides

Step-by-step explanation:

So you start off with $21.50. Subtract $4 from 21.50 and you'll end up with $17.50. Now divide $17.50 with the price of each ride which is $2.50 and you end up with 7. You are able to go on 7 rides.

4 0
3 years ago
which function rule is represented by the tablex 0 1 2 3y 0 -7 -14 -21a y= 7xb y= -7xc y= x-8d y= 7x-14
salantis [7]

The answer is y = -7x

Expalnation

Two points on the table are (0,0) and (1,-7)

Change in y = -7-0 = -7

Change in x = 1-0 = 1

Slope m of the function = -7/1= -7

Using y= mx + c

Picking point (0,0), x = 0, y = 0

y = mx + c becomes

0 = -7(0) + c

0 = 0 + c

c= 0

Hence, the equation is y = -7x + 0

which is y = -7x

Option b is the correct answer

8 0
1 year ago
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