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Len [333]
4 years ago
6

Use distributive property 4​(x-​5)=3​(x+​5)

Mathematics
1 answer:
Soloha48 [4]4 years ago
7 0

4​(x-​5)=3​(x+​5)

Multiply the first bracket by 4

(4)(x)=4x

(4)(-5)=-20

Multiply the second bracket by 3

(3)(x)=3x

(3)(5)=15

4x-20=3x+15

Move 3x to the other side

Sign changes from +3x to -3x

4x-3x-20=3x-3x+15

4x-3x-20=15

x-20=15

Move -20 to the other side

Sign changes from -20 to +20

x-20+20=15+20

x=15+20

Answer: x=35

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According to his GPS, it will take Lanny 1 hour to travel 40 miles. Which expression shows how to determine the speed in miles p
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Well, I would first make a table and then I would find the slope. That is my advice.
3 0
3 years ago
Renee, Susan, and Martha will share the cost to rent a vacation house for a week. Renee will pay 40 percent of the cost. What fr
Rom4ik [11]

Answer:

Amount paid by Martha = $200

Amount paid by Renee = $320

Amount paid by Susan = $280

Step-by-step explanation:

Here, the given question is INCOMPLETE.

Renee, Susan and Martha will share the cost to rent a vacation house for a week. Renee will pay 40% of the cost. Susan will pay 0.35 of the cost. Martha will pay the remainder of the cost. If the cost to rent the vacation house is $800, how much will each person pay?

Here, the total cost of the vacation  = $800.

Renee pays 40% of the cost.

Calculating 40% of $800, we get:

\frac{40}{100} \times 800 = 320

So, Renee pays a total of $320 in the cost of vacation.  ... (1)

Susan pays 0.35 = 35 %  of the cost.

Calculating 35% of $800, we get:

\frac{35}{100} \times 800 = 280

So, Susan pays a total of $280 in the cost of vacation.  ... (2)

Now, The amount paid by { Renee + Susan  + Martha} = $800

⇒ $320 + $280 + Amount paid by Martha  = $800

⇒Amount paid by Martha = $800 - $600 = $200

Hence, Amount paid by Martha = $200

Amount paid by Renee = $320

Amount paid by Susan = $280

7 0
4 years ago
There are two values of a for which the equation 5x2+ax+7x+5=0 has only one solution for x. What is the sum of those values of a
JulsSmile [24]

Answer:

-14

Step-by-step explanation:

First of all, we know that 5x^2+ ax+7x +5=0 only has one root. That means that b^2 - 4ac=0, and we can use this to find the discriminant, ax + 7x.

Now, if we simplified 5x^2+ ax+7x +5=0, by dividing it all by 5, it would be x^2+(a+7)/5x + 1 = 0.

After, we can plug what we know into the formula, b^2 - 4ac=0. It would be:

(a+7)^2 / 25 - 4 = 0

(a+7)^2 / 25 = 4

(a+7)^2 = 100

Since this is a square root, a+7 can be both negative or positive.

a+7= 10, or a+7 = -10

a=3, or a=-17

The question asks for the sum of a, which is 3 + (-17) = -14

Therefore, the answer is -14.

:) have fun with your rsm problems, assuming you got this from the portal.

7 0
3 years ago
Using L'Hopital's rule, evaluate the limit as x approaches infinity of (sin (8x))/(5x)
sweet-ann [11.9K]

Answer:

45.89

Step-by-step explanation:

This is what is the answer

6 0
3 years ago
Geraldo has 3 fewer marbles then yan. Together, they have 21 marbles. Which represents this situation ?
Kazeer [188]

Answer:

Step-by-step explanation:

X = number of Yan's marbles.  x-3 = number of Geraldo's marbles

annswer: x + (x - 3) = 21

hopes this helps :)

3 0
3 years ago
Read 2 more answers
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