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Vikentia [17]
3 years ago
14

What is the solution to the equation 3(2x+5)=3x+4x?

Mathematics
1 answer:
lina2011 [118]3 years ago
7 0

Answer:

x=15

Step-by-step explanation:

6x+15=7x

15=x

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Can someone help me with this<br> giving out brainliest
wel

Answer:

C

Step-by-step explanation:

Step 1: plot your 2 known points, (-2,3) and (1,0)

Step 2: after that, you should see that your y value should be a - and your x a +. You can eliminate A and B.

Step 3: check to see if C is a correct answer, (4,-3)

C is the answer, hope that helps

8 0
3 years ago
Solve y = x + 6 for x.<br><br> x = y + 6<br> x = −y + 6<br> x = y − 6<br> x = −y − 6
madam [21]

Answer:

x = y − 6 Is your answer

Step-by-step explanation:

y = x + 6

x = y -6

6 0
3 years ago
1. A penny is dropped from the top of the empire state building. The function h(t) = -16t^2 +1250 describes the height of the pe
liubo4ka [24]

Answer: 8.83\ s

Step-by-step explanation:

Given

Height of the dropped penny is given by

h(t)=-16t^2+1250

When penny hit the ground, h(t)=0

\therefore -16t^2+1250=0\\\Rightarrow 16t^2=1250\\\\\Rightarrow t^2=\dfrac{1250}{16}\\\\\Rightarrow t=\sqrt{\dfrac{1250}{16}}\\\\\Rightarrow t=8.83\ s

Thus, it takes 8.83 s to hit the ground.

5 0
3 years ago
The volume of a rectangular prism is 7200 cubic centimeters. It has a length of 24 centimeters and a width of 20 centimeters. Wh
inessss [21]
The height of the rectangular prism is 15 centimeters

5 0
3 years ago
1) if the sum of two prime numbers is divisible by 7 and is a perfect square, what is a possible product of these numbers?
Nuetrik [128]
1) The sum of 2 prime numbers is ALWAYS even, so if x and y are prime number,. then (x+y)/7  = z². In this case either x = 2 or y = 5 (or vice vera). This is the only possibility to be divisible by 7 . Then (5+2)/7 = 1² = 1

2) 5 pipes → 2 hours → 2 pools
then 1 pipe takes (5x2) 10 hours to fill 2 pools
or  1 pipe takes (10/2) 5 hours to fill 1 pool

3) It's 6/30 = 0.2 or 20%

4) 35% represent 7 Students, 100% of the class represent x students:
35%/7 = 100%/x
0.35/7 = 1/x (Cross multiplication) →0.35x = 7 and x = 7/0.35 → x = 20 students

5) Let K be the age of Katie and B her brother's
K + 2 = B  OR K  = x - 2 (Today)

In 12 years (B+12), B will be twice K  (remember K = B-2) →
B+12 = 2(K) OR B+12 = 2(B-2)
B+12 = 2(B-2) →
B+12 = 2B - 4→
12 + 4 = B and B = 16. If the brother is 16, then Kate is 14
:
3 0
3 years ago
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