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Marta_Voda [28]
2 years ago
9

30% of what number is 165

Mathematics
1 answer:
Contact [7]2 years ago
7 0

Answer:

550

Step-by-step explanation:

165 x 100= 16500/30=550

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A number increased by twelve
Anarel [89]

Answer:

X+12

Step-by-step explanation:

"Increased by" means addition.

3 0
3 years ago
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Jason drove 125 miles without stopping . His average speed was 50 miles per hour . How many hours did Jason drive
GalinKa [24]

Answer:

2/5=0.4h

Step-by-step explanation:

Use V=X/t

t=X/V

=50/125=2/5=0.4h

4 0
3 years ago
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Rounded to the nearest hundredth, what is the positive solution to the quadratic equation 0 = 2x2 + 3x – 8? Quadratic formula: x
OleMash [197]

ANSWER



x=1.39 to the nearest hundredth.



EXPLANATION



We have the equation,



0=2x^2+3x-8



Which can be rewritten as



2x^2+3x-8=0

The question demands the use of the quadratic formula.

Comparing this to the general quadratic equation;

ax^2+bx+c=0


a=2,b=3,c=-8


The quadratic formula is given by;


x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}


We now substitute all the values in to the formula;


x=\frac{-3\pm\sqrt{(3)^2-4(2)(-8)}}{2(2)}

We simplify to obtain;

x=\frac{-3\pm\sqrt{9+64}}{4}


x=\frac{-3\pm\sqrt{73}}{4}


We now split the plus or minus sign to obtain;


x=\frac{-3-\sqrt{73}}{4}


This implies that;


x=-2.89

Or

x=\frac{-3+\sqrt{73}}{4}


This will evaluate to;


x=1.39

Hence, the positive solution rounded to the nearest hundredth is

x \approx 1.39

6 0
4 years ago
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julia is putting together bag of 45 blocks. if she wants the probability of choosing a red block to be 1/5 how many red blocks j
4vir4ik [10]

Answer:

9

Step-by-step explanation:

Given that the sample size is 45 blocks

Let number of red blocks in the bag to be x

Then the probability of chosing a red block will be x/45

Given that the probability of choosing a red block is 1/5 then you can form the expression;

x/45 = 1/5 ---------------find the value of x  by performing cross multiplication

5x=45*1

5x/5=45/5

x=9

Answer

Julia put 9 red blocks in the bag.

7 0
3 years ago
Ms. Day drew a rectangle
Ksju [112]

Answer:

700

Step-by-step explanation:

4 0
3 years ago
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