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kvasek [131]
3 years ago
10

Solve for x. 2x = 15 + x x = -15 x = 15 x = -15/2 x = 15/2

Mathematics
1 answer:
Marysya12 [62]3 years ago
4 0

Answer:

x = 15

Step-by-step explanation:

The given equation is

2x = 15 + x

This is a linear equation in x.

We solve for x by grouping similar terms.

Let us subtract x from both sides of the equation to get:

2x - x = 15 + x - x

We simplify to get:

x= 15 + 0

This implies that:

x = 15

Therefore the correct solution is x=15.

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Quarters make up what part of the group of coins ? Write the answer as fraction and word firm
aleksandr82 [10.1K]
Quarts = 25 there are 100 in a dollar so you have 25 out of 100

25/100<span />
3 0
3 years ago
Sales prices of baseball cards from the 1960s are known topossess a skewed-right distribution with a mean sale price of $5.25and
Serga [27]

Answer:

c. Skewed-right with a mean of $5.25 and a standard error of$0.28

Step-by-step explanation:

As we have given that Sales prices of baseball cards have a right-skewed distribution with a mean $5.25 and a standard deviation is $2.80.

Now, We know that if standard deviation = σ

then, standard error = \frac{\sigma}{\sqrt{n}}

As, we have standard deviation = $2.80

then standard error will be \frac{2.80}{\sqrt{100}}

⇒ Standard error = $0.28

Hence, Option (c) is the correct option.

6 0
3 years ago
Share R86,70 in the ratio 2 : 1​
rusak2 [61]

Answer:

2:1

2=5780

1=2890

Step-by-step explanation:

2/2+1=2/3×86,70=5780

1/2+1=1/3×8670=2890

4 0
3 years ago
Which value for x makes the sentence true?<br><br> 3/4x + 4 = 7
Aleks04 [339]

Answer:

(x) = 4

Step-by-step explanation:

 3/4 (x) + 4 = 7

 3/4 (4) + 4 = 7

0.75 (4) + 4 = 7

          3 + 4 = 7

                7 = 7

8 0
2 years ago
What is the equation of the line that passes through the point (-1, -7) and has a<br> slope of 2?
o-na [289]

Answer:

(a,b)------>(-1,-7)let

now

m(x-a)=(y-b)

2(x+1)=(y+7)(where m=slope

2x+2=y+7

2x-y=7-2

2x-y=5 is a required equation.

7 0
3 years ago
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