Select all the expressions that simplify to a positive number.
1312−25.34
–10.5+1134
(−45)÷(−23)
414⋅(−1.25)
–10110+(−18.9)

Answer:

45 ∘,45 ∘ ,90 ∘

Step-by-step explanation:

Since, the angle is right angled isosceles triangle. One of the angles will be 90 ∘

. let the other two angles be x

Thus, sum of angles = 180

90+x+x=180

2x=90

x = 45 ∘

The measure of each angle is: 45 ∘ ,45 ∘ ,90 ∘

___________

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Answer:

c) -20/27

Step-by-step explanation:

Given problem,

→ (-8/9) × (5/6)

Then the product will be,

→ (-8/9) × (5/6)

→ (-8 × 5)/(9 × 6)

→ -40/54

→ -20/27

Hence, answer is -20/27.

Answer:

(-2.1) x (-1.4) = 2.94

Step-by-step explanation:

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Answer:

4/8, and 2/8

Step-by-step explanation:

Answer: A right angle is also equal to 90 degrees The sides that include the right angle are perpendicular and the base of the triangle. The third side is called the hypotenuse, which is the longest side of all three sides.

Answer:

B straight lines that pass through the origin.

Step-by-step explanation:

A line beginning at point (0,0) and continuing to (30,10)

A proportional relationship will always go through the origin so you can eliminate the first two. In the last one the second coordinate is (4,12) which is wrong because the x is 12 and the y is 4. So that is how you know the 3rd option is correct :)

Answer:

A line beginning at point (0,0) and continuing to (30,10)

Step-by-step explanation:

I took the exam and got it right

Answer:

3 divided by 1/9 equals 27.

Answer: 27

Step-by-step explanation:

3 ÷ 1/9 =

(3/1)(9/1)

=27

Hope this helps!!! :)

Step-by-step explanation:

6+8= 14

6/14×100=3/7×100=300/7=42.85

8/14×10=4/7×100=400/7=57.14

Answer:

0.75

Step-by-step explanation:

in a unit rate the denominator is always 1. So, to find unit rate divide the denominator with the numerator in a way that the denominator becomes 1.

Probabilities can be expressed as a ratio of the total who fit the criteria and the total who do or do not. In other words, true/total. Here, there are 9 who wear green and 26 who do not. So, the probability is 9/26.

Answer:

y = 120

Step-by-step explanation:

If x = y, they can be written as a fraction to show their proportionality as [tex]\frac{10}{80}[/tex]. This is equal to [tex]\frac{1}{8}[/tex], so when x = 1, y = 8. To find when y is equal to x when x = 15, just multiply y by 15. 15(8) = 120, so y = 120 when x = 15.

Answer:

120

Step-by-step explanation:

set up a proportion: 80/10=y/15

solve: 80*15=10y

1200=10y

y=120

Answer:

Step-by-step explanation:

Given ratio,

→ 9:13

The 5 equivalent ratios are,

→ (9 × 2):(13 × 2) = 18:26

→ (9 × 3):(13 × 3) = 27:39

→ (9 × 4):(13 × 4) = 36:52

→ (9 × 5):(13 × 5) = 45:65

→ (9 × 6):(13 × 6) = 54:78

Hence, these are the ratios.

Answer:

57 90

Step-by-step explanation:

it is right trust me

Answer:

Marc: 8 meters & 4 seconds

Prisha: 6 meters & 3 seconds

Step-by-step explanation:

Marc: If Marc travels 8 meters in 4 seconds it means that he has a speed of 2m/s

Prisha: If Prisha travels 6 meters in 3 seconds it means that she has a speed of 2m/s

To find speed we simply have to divide distance by time

The way that I figure out the answer was by trial and error. This is when we have to get random numbers and try them.

2 seemed a reasonable answer as it couldn't a number such as 5 as there is only 1 factor of 5 between 0 and 9. There are 4 factors of 2 between 0 and 9

Hope this helps, have a great day!!

The correct answer is y = -2x.

Direct proportion can also be known as Direct variation. When the ratio of two quantities equals constant, we call it Direct Proportion. Direct Proportion is denoted by  [tex]\alpha[/tex] .  

Let us consider two quantities a and b, then the direct proportion between a and b can be expressed as,

                                          a  [tex]\alpha[/tex]  b

                                 =>    [tex]a/b = k[/tex] ( where k is constant)

                                 =>     [tex]a = kb[/tex] [tex]--- >[/tex] 1

Substitute a=x and b=y in 1, and then we get

                                          [tex]x = ky[/tex]

Therefore, the general form of an equation which satisfies direct proportion is x = ky.

[tex]y=1/2x-2, y=-2x+3,y=4/x[/tex]  are not in the form of [tex]x = ky[/tex].

So, The equation of direct proportion is y = -2x.

To know more about direct proportion:

https://brainly.com/question/28596620

Answer:

O = 8

K = 0

L = 1

V = 7

I = 2

M = 4

H = 9

E = 6

T = 9

N = 5

Step-by-step explanation:

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Answer:

1) O = 8

2) K = 0

3) L = 1

4) V = 7

5) I = 2

6) M = 4

7) H = 9

8) E = 6

9) T = 9

10) N = 5

Step-by-step explanation:

Answer:

-3/16

Step-by-step explanation:

Given problem,

→ (3/8) × (-3/6)

Let's solve the problem,

→ (3/8) × (-3/6)

→ (3 × -3)/(8 × 6)

→ -9/48

→ -3/16

Hence, answer is -3/16.

Answer:

[tex]\frac{1}{8}*(-\frac{3}{2})\\ =-\frac{3}{16}[/tex]

Step-by-step explanation:

Answer:

There are 5,280 feet in a mile.

There are 60 minutes in an hour.

As a quick check, does this answer look correct? If you were travelling 5 miles per hour slower, at a steady 60 mph, you would be driving 60 miles every 60 minutes, or a mile a minute. If you're driving 65 miles per hour, then, you ought to be going just over a mile a minute — specifically, 1 mile and 440 feet.

While it's common knowledge that an hour contains 60 minutes.

Step-by-step explanation:

If your car is traveling 65 miles per hour, then it is also going 343,200 feet (65 × 5,280 = 343,200) per hour. Then, you can divide the total feet per hour by 60, and you know that your car is traveling 5,720 feet per minute.

Answer:

WHat cars!?

Step-by-step explanation:

Step-by-step explanation:

If he got 9 questions wrong on a 75 multiple choices test, that means he got 66 right. That means the ratio to the questions he got correct to the questions he got incorrect is 66:9, or 22:3 simplified.

Answer:

[tex]\huge\boxed{\sf x = 16/9}[/tex]

Step-by-step explanation:

[tex]\displaystyle \frac{x}{2} =\frac{8}{9} \\\\Cross \ Multiply\\\\x \times 9=2\times 8\\\\9x = 16\\\\Divide \ 9 \ to \ both \ sides\\\\x = 16/9\\\\\rule[225]{225}{2}[/tex]

Answer:

0.25 pounds

Step-by-step explanation:

3 : x = 12 : 1

x = 3/12

x = 1/4

x = 0.25 pounds

Answer:

0.25!

Step-by-step explanation:

Step-by-step explanation:

Convert the following decimals into percentages:

0.004 * 100 = 0.4%

0.26 * 100 = 26%

0.58 * 100 = 58%

Answer:

non-unifrom

Step-by-step explanation:

Answer:

y = 15

Step-by-step explanation:

We need to solve for k

y = x

21 = 7k  Divide both sides by 7 to solve for k

3 = k

y = xk

y = 5(3)

y = 15

Answer: y = 15

Step-by-step explanation:  

Answer:

$8

Was the original price.

Step-by-step explanation:

100% - 25% = 75%

$6 ⇒ 75%

$A ⇒ 100%

A = $6* 100% / 75%

A = 8