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3 years ago

Which symbol makes the sentence true?

Mathematics

2 answers:

stiks02 [169]3 years ago

4 0

$-\frac{5}{12} \ \textless \ -\frac {2}{5}$ because -2/5 is closer to 0 than -5/12

jeka57 [31]3 years ago

4 0

A. < because -5/12 equals -0.41666... while -2/5 equals -0.4 and -0.41666... is smaller than -0.4.

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A student says that if 5x2 = 20, then x must be

lutik1710 [3]

Answer:

I agree with the student's answer. "x" cannot be -2 because then it would make -20 which is not equal to 20:

5(-2)(2) = ?

-10 x 2 = ?

? = -20

-20 ≠ 20

Step-by-step explanation:

Justificaiton:

5(x)(2) = 20

10(x) = 20

10/10(x) = 20/10

x = 2

Second Justification:

5(x)(2) = 20

5/5(x)(2) = 20/5

2x = 4

2x/2 = 4/2

x = 2

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3 years ago

Point V lies between points U and W on Line segment U W.

Nutka1998 [239]

Answer:

The correct answer is (d) 36 units.

Step-by-step explanation:

Just took the test on edge :)

5 0

3 years ago

Read 2 more answers

48% of what number is 108? A. 44.4 B. 51.84 C. 225 D. 5184

Ivan

Let the number = x.

48% of x = 108

(48/100)x = 108

x = 108 * 100 /48 = 225 use your calculator.

Answer is option C.

8 0

3 years ago

Read 2 more answers

How would you find x?

Vanyuwa [196]

Answer:

Step-by-step explanation:

x=7

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3 years ago

Three people pull simultaneously on a stubborn donkey. Jack pulls directly ahead of the donkey with a force of 90.5 N , Jill pul

Radda [10]

Answer:

Fn= 174.9 N : Magnitude of the net force the people exert on the donkey.

Step-by-step explanation:

We find the components of the forces in x-y-z

Force of Jack in z =F₁z=90.5 N in direction (+z)

Force of Jill in x = F₂x= -82.3*cos45°= - 58.19 N (-x)

Force of Jill in y =F₂y=-82.3*sin45°= + 58.19 N (+y)

Force of Jane in x =F₃x=125*cos45°= + 88.4 N (+x)

Force of Jane in y =F₃y=125*sin45°= + 88.4 N (+y)

Calculating of the components of the net force the people exert on the donkey.

Fnx= F₂x+F₃x=( - 58.19+ 88.4 )N=30.2N (+x)

Fny= F₂y+F₃y=( 58.19+88.4 ) = 146.59 N (+y)

Fnz =F₁z=90.5 N (+z)

Calculating of the magnitude of the net force the people exert on the donkey.

$F_{n} =\sqrt{(F_{nx})^{2}+(F_{ny}) ^{2} +(F_{nz}) ^{2} }$

$F_{n} =\sqrt{(30.2)^{2}+( 146.59) ^{2} +(90.5) ^{2} }$

$F_{n} = 174.9 N$

7 0

3 years ago