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agasfer [191]
3 years ago
11

7(10x+5-9x)=70 I rly need help on this

Mathematics
2 answers:
Anna [14]3 years ago
5 0

Answer:

x = 5

Step-by-step explanation:

1. Combine like terms

2. Multiply by 1

3. Distribute

4. Subtract  3

5  from both sides of the equation

5. Simplify

6. Divide both sides of the equation by the same term

7. Simplify

Korolek [52]3 years ago
3 0
Answer: x=5

Step by Step Explanation:
7(10x+5-9x)=70 distributive property
70x+35-63x=70 subtract common terms
7x+35=70 subtract both sides by 35
7x=35 divide both sides by 7
x=5

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NEED HELP ASAP!!!!!  What is theoretical probability and experimental probability?
SVETLANKA909090 [29]

On the basis of mathematical theory, the chance of occurrence of any event is called theoretical probability.

For example if we toss a coin then the probability of a head and a tail is half half i.e 0.5.

But the probability  calculated by repeated experiments and examine the outcomes are called experimental probability.

For example if we toss a coin 20 times and got 9 times head and 11 times head then the probabilities are given by

P(\text{head})= \frac{9}{20} \\
\\
P(\text{head})= \frac{11}{20}

These probabilities are different what we got in case of theoretical probabilities.


6 0
4 years ago
Read 2 more answers
Write and solve an equation to find the value of x and the missing angle measures
MatroZZZ [7]

Answer:

in explanation

Step-by-step explanation:

angle rules say that those angles respond to each other meaning

they will equal each other

so 6x-4=4x+14

now solve for x

x=9

the top angle will be

6(9)-4=50

bottom angle will be 50

4(9)+14=50

4 0
3 years ago
Find the slope for (3,4) and (3,-4)
saveliy_v [14]

Answer:

undefined

The problem:

Find the slope for the line going through (3,4) and (3,-4).

Step-by-step explanation:

Line up points vertically and subtract.

Then put 2nd difference over 1st.

( 3 ,  4)

-(3  , -4)

------------

0      8

So the slope would have been 8/0 but this is undefined.

So the slope is undefined.

Also notice the x's are the same and the y's are difference so this is a vertical line. There is only rise in a vertical line and no run.  Recall, slope is rise/run. You cannot divide by 0 so this is why we say the slope is undefined when the x's are always the same no matter the y.

7 0
3 years ago
(2n-9)-5(-2.4n+4) please help!
motikmotik

(2n - 9) - 5(-2.4n + 4) =

The first set of parentheses is unnecessary, so we just drop them.

= 2n - 9 - 5(-2.4n + 4)

Now we distribute -5 by the second set of parentheses. Each term in the parentehses is multiplied by -5.

= 2n - 9 + 12n - 20

Now we combine like terms.

= 2n + 12n - 9 - 20

= 14n - 29

8 0
3 years ago
You buy tomato sauce for $0.37 per ounce. One portion of potato gnocchi requires 2 ounces of tomato sauce. How much does the sau
Novay_Z [31]

Answer:

$0.74 = 74 cents

Step-by-step explanation:

The cost of one ounce of tomato = $0.37

1 portion of potato gnocchi requires 2 ounces of tomato sauce.

To find the cost of one portion of the potato gnocchi, we have to simply find the cost of 2 ounces of tomato sauce.

That is:

Cost = 2 * 0.37 = $0.74

Hence, one portion of potato gnocchi costs $0.74

Since $1 = 100 cents, the cost in cents will be:

0.74 * 100 = 74 cents

6 0
3 years ago
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