Help help help help!

Answers

Answer 1

Answer: $(7)/(2) * (11)/(5)$ = $(77)/(10)$

That is basically 7 7/10

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What is the solution for the following system of equations? Use ANY method to solve. 2x + 8y = 4 x = -3y + 5 Question 4 options: x = 14, y= -3 x = 2, y = -3 x = -3, y = -3 x = 12, y = 5
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Which expression is not equivalent to -4x^3+x^2-6x+8?a) x^2(-4x+1)-2(3x-4)
b) x(-4x^2-x+6)+8
c) -4x^3+(x-2)(x-4)
d) -4(x^3-2)+x(x-6)

Answers

Answer:

option b is not equal to the given polynomial

What is 20/3 equal to?

Answers

20/3 is equal to ------?

First we will divide numerator by the denominator.

20 ÷ 3 = 6.66666666667

Ok, Now we will see how many times 3 goes in to 20.

3 × 6 = 18.

There will be 2 left. SO we will set our fraction like a mixed number:-

6 2/3

Hope I helped:P

Plz helpWhat is sum of 5.3x10^5 and 3.8x10^4

A. 4.33x10^4
B. 5.68x10^5
C. 9.1x10^9
D. 9.1x10^5

Answers

This is a classic example of Scientific Notation.
5.3 x 10^5 actually equals 530,000
3.8 x 10^4 actually equals 38,000
Since it is asking for the sum of the numbers you are adding.
Your new equation look like this:
530,000 + 38,000
= 568,000
now all you have to do is count the decimal points. You start from the end zero and count the spaces in between until you get to the tenths place. (Right behind the first number) There are 5
So your answer will be:
B. 5.68 x 10^5.

The movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending on your answerWhich of the following is true based on the inequality represented by the graph?
O
x could be – 3
0x could be - 1
x cannot be - 3
x cannot be - 5
Submit
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Help

Answers

Based on the inequality that is represented by the number line, the true statement is: A. x could be -3.

What is a number line?

A number line can be defined as a type of graph with a graduated straight line which consists of numerical values (positive and negative numbers) that are placed at equal intervals along its length.

From the number line, x is less than or equal (≤) negative three (-3).

x ≤ -3

Therefore, we can deduce the following points:

x could be negative three (-3).

x could be negative five (-5).

x cannot negative one (-1).

Read more on number line here: brainly.com/question/24644930

Answer:

Step-by-step explanation:

10 cups

2/8=10/x

2x=80

X=40cups

40 cups

2/8=40/x

2x=320

X=160

8 cups

2/8=8/x

2x=64

X=32

Suppose the lengths of two sides of a right triangle are represented by 2x and 3 (x + 1), and the longest side is 17 units. Find the value of x.

Answers

Answer:

x=4

Step-by-step explanation:

Step 1:-

given the lengths of two sides of a right angle are represented by 2x and 3(x+1) and longest side is 17 units.

AB = 2x and BC = 3(x+1) and longest side AC= 17

by using Pythagoras theorem

$AC^2 = AB^2 + BC^2$

step 2:-

The hypotenuse is longest side is AC = 17 units

(17)^2 = 4x^2 +9(X+1)^2

on simplification, we will use formula

$(a + b)^2 = a^2 +2ab+b^2$

289 = 4x^2 +9(x^2+2x+1)

$13x^2 +18x-280 = 0$

finding factors 70 X 52 = 3640

$13x^2 +70x-52x-280 = 0$

$13x^2 -52x+ 70x-280 = 0$

Taking common , we get

13x(x-4)+70(x-4)=0

x-4=0 and 13x+70=0

x=4 and $13x =-70$

x=4 and $x=(-70)/(13)$

we can not choose negative value so x value is 4

Final answer:- x = 4

verification:-

$AC^2 = AB^2 + BC^2$

289 = 4(4)^2+9(4+1)^2

289 = 64 +9(25)

289=289

Answer:

x = 4

Step-by-step explanation:

The length of two legs of a right angle triangle are 2x and 3(x+1).

The length of longest side is 17 units. It means measure of hypotenuse is 17 units.

According to the pythagoras theorem,

$leg_1^2+leg_2^2=hypotenuse^2$

$(2x)^2+(3(x+1))^2=(17)^2$

$4x^2+9(x^2+2x+1)=289$

$4x^2+9x^2+18x+9=289$

$13x^2+18x-280=0$

On splitting the middle terms we get

$13x^2+70x-52x-280=0$

$x(13x+70)-4(13x+70)=0$

$(13x+70)(x-4)=0$

Using zero product property we get

$13x+70=0\Rightarrow x=-(70)/(13)$

$x-4=0\Rightarrow x=4$

The value of x can not be a negaive number, because for negative value of x the value of 2x is negative and side can not be negative.

Therefore, the value of x is 4.

last month you swam the 50-meter freestyle in 28.38 seconds. today you swam it in 27.33 seconds. what is your percent of change?

Answers

The distance is the same(50 meters). So we will operate only with numbers 28.38 and 27.33.
The difference is 28.38-27.33=1.05
So the percent of change is (1.05/28.38)*100%≈3.7%
The answer is 3.7%

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