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Katen [24]
3 years ago
13

Solve for x using cross multiplication. X + 8 - 3x – 2 8 3 x = [?]

Mathematics
2 answers:
lina2011 [118]3 years ago
5 0

Answer:

I love algebra anyways  

the ans is in the picture with the steps  

(hope it helps can i plz have brainlist :D hehe)

Step-by-step explanation:

kvasek [131]3 years ago
5 0

Answer:

x=70

Step-by-step explanation:

(x+8)*8=(3x-2)*3

8x+64=9x-6

x=70

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The price of a four-star dinner was $100 two decades ago. A report says that a dinner is 250% of what it was 20 years ago, how m
Nina [5.8K]

The dinner will cost $250 today.

<u><em>Explanation</em></u>

The price of a four-star dinner was $100 two decades ago and now the cost of the dinner is 250% of what it was 20 years ago.

So for finding the current cost, we will find 250% of $100 .

First we need to make 250% as decimal form after dividing it by 100. So....

250% = \frac{250}{100}= 2.50

Now we will multiply this 2.50 with $100 for getting the current cost of the dinner.

Thus, the current cost =(100* 2.50)dollar = 250 dollar



7 0
3 years ago
Find the area of a square whose diagonal length is 32 CM​
BigorU [14]

Answer:

512cm^2

Step-by-step explanation:

Let's imagine cutting the square down that diagonal. Now, we have two isosceles right triangles with a hypotenuse with length 32cm. Let's take one of those triangles for now and focus on it. Let's give the one of the legs of a triangle some length x. Since both legs are the same length, by the Pythagorean theorem:

x^2+x^2=32^2\\\\2x^2=1024\\\\x^2=512\\\\x=\sqrt{512}

Since this leg makes up one side of the square, we can use it to calculate the area of the square, which is just the side length squared:

A=(\sqrt{512})^2 = 512

7 0
3 years ago
please help me with my question due tomorrow morning I will like and mark as brainliest for the first correct answer please​
galina1969 [7]

Answer:

p = (2k + 1)i + j

q = 25i + (k + 4)j

p . q = 11

Find the dot product of p and q

(2k + 1)(25) + (k + 4) = 11

50k + 25 + k + 4 = 11

51k = -18

k = - 18/51 = –6/17.✅

b) p.q = |p||q|cos∅

p= (2k + 1)i + j = [2(-6/17) + 1)i + j ]= 5/17i + j

|p| = √ (5/17)² + 1²

|p| = √314/ 17 ( The square root doesn't cover the 17) = 1.0424

q = 25i + (k + 4)j = 25i + ( -6/17 + 4)j

q = 25i + 62/17 j

|q| = √ 25² + (62/17)²

= 25.2646

Now applying them to the formula above

We already have p.q = 11 from the question.

11 = (1.0424)(25.2646)Cos∅

11 = 26.3358Cos∅

Cos∅ = 11/26.3358

Cos∅ = 0.4177

∅ = 65.31°.

This should be it.

Hope it helps

6 0
3 years ago
X + 2 &gt; 5.8 Whats The VALUE OF X
Oduvanchick [21]

Answer:

X > 3.8

Step-by-step explanation:

x +2 > 5.8

x +2 -2 > 5.8 -2

x > 3.8

7 0
3 years ago
Read 2 more answers
If mike sold half of his comic books and then bought 9. He now has 12. How many did he begin with?
anygoal [31]
The expression would be (12-9)x2=6 so he had 6 comic books

5 0
4 years ago
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