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2 years ago

11

Liam earned a grade of 65% on his miltiple choice science final that had a total of 140 problmes. How many problems on the final

exam did liam get wrong

1 answer:

Vsevolod [243]2 years ago

8 0

Answer:

49

Step-by-step explanation:

65% of 140

65/100 × 140

= 91 right

140 - 91

= 49 wrong

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Which do not belong x-2=4,x-3=6,x-5=1 or x-6=0

SOVA2 [1]

Answer:

x-3=6

Step-by-step explanation:

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3 years ago

(2x+4)^2 - (x-5)^2 = 26x<br> Please solve (explained)

Zina [86]

Expand the squared binomials:

$(2x+4)^2=4x^2+16x+16$

$(x-5)^2=x^2-10x+25$

Then

$(4x^2+16x+16)-(x^2-10x+25)=3x^2+26x-9=26x$

$\implies3x^2-9=0$

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$\implies x^2=3$

$\implies x=\pm\sqrt3$

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3 years ago

The ratio of the number of left-handed batters to the number of right handed batters is 5:8. There are 45 left-handed batters. H

OleMash [197]

5/8=45/x
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3 years ago

How would I do this

Solnce55 [7]

Answer:

the ramp must be lowered

Step-by-step explanation:

Use the definition of the sine function to find the height of a ramp that is 8°.

Sine = Opposite/Hypotenuse

sin(8°) = height/8

height = 8×sin(8°) = 1.11

The height Nate's dad allows is 1.11 feet. At 1.5 feet, the ramp is too high.

The ramp must be lowered.

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3 years ago

Which radical expression is an irrational number? A. √ 121 B. √ 65 C. √ 36 D. √ 64

alina1380 [7]

We will verify each options

option-A:

$\sqrt{121}$

we can factor it

$\sqrt{121}=\sqrt{11*11}$

$\sqrt{121}=\sqrt{11^2}$

$\sqrt{121}=11$

so, this is not irrational.........Answer

option-B:

$\sqrt{65}$

Since, it can not be factored

so, this is irrational.........................Answer

option-C:

$\sqrt{36}$

we can factor it

$\sqrt{36}=\sqrt{6*6}$

$\sqrt{36}=\sqrt{6^2}$

$\sqrt{36}=6$

so, this is not irrational.........Answer

option-D:

$\sqrt{64}$

we can factor it

$\sqrt{64}=\sqrt{8*8}$

$\sqrt{64}=\sqrt{8^2}$

$\sqrt{64}=8$

so, this is not irrational.........Answer

6 0

4 years ago

Read 2 more answers