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mote1985 [20]
3 years ago
8

How do I do thisplz help​

Mathematics
2 answers:
Law Incorporation [45]3 years ago
6 0

Answer:

6

Step-by-step explanation:

Use order of operations.

42/(15-2^3)

Exponents in Parentesis

42/(15-8)

Subtraction inParenthesis

42/7

Division

6

WINSTONCH [101]3 years ago
3 0

Answer:

6

Step-by-step explanation:

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Paint is red : blue in a ratio 2:4. if 6 litres of blue is used how much red
butalik [34]
Red=2 nits
blue=4 nits

if 6liters=blue=4 units
divide 2
3 liters=2 units=red

red=3 liters
6 0
3 years ago
4 cubed 2 divided by 4
maksim [4K]

Answer: 32

Step-by-step explanation:

4 cubed 2 divided by 4

Simply is

4 to the power 3 multiplied by 2 divided by 4

4*4*4*2/4

128/4= 32

7 0
3 years ago
OK yall i need help with this.I honestly hate geometry.Seriously.I need good student with good explanation skills.Ill mark brain
jonny [76]

Answer:

Step-by-step explanation:

In parallelogram, opposite sides are parallel and equal

3x + 7 = 5x -17  

3x - 5x = -17 - 7

-2x = - 24

x = -24 /-2

x = 12        

3 0
3 years ago
For a sale, a store decreases its prices on all items by 25%. An item that costs $120 before the sale now costs $120 - 0,25($120
Alexxandr [17]

Answer:

Cost = \$120 * 1 - \$120 * 0.25

Step-by-step explanation:

Given

Cost = \$120 - 0.25(\$120)

Required

Solve using distributive property

Cost = \$120 - 0.25(\$120)

\$120 can be rewritten as 1(\$120)

So:

Cost = 1(\$120) - 0.25(\$120)

Factorize:

Cost = \$120(1 - 0.25)

Now, we can apply distributive property on the expression;

Cost = \$120 * 1 - \$120 * 0.25

Hence, the above is an equivalent expression.

Solving further, we have

Cost = \$120 - \$30

Cost = \$90

3 0
3 years ago
The weight at birth of males has a mean value of 3.53 kg with a standard deviation of 0.58. What birth weight has a​ z-score of​
Serga [27]

Answer:

A birth weight of 3.9998kg has a z-score of 0.81.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 3.53, \sigma = 0.58

What birth weight has a​ z-score of​ 0.81?

This is X when Z = 0.81. So:

Z = \frac{X - \mu}{\sigma}

0.81 = \frac{X - 3.53}{0.58}

X - 3.53 = 0.58*0.81

Z = 3.9998

A birth weight of 3.9998kg has a z-score of 0.81.

7 0
3 years ago
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