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2 years ago

13

coppers mother gives him $79 to the store, he buys 15 loaves of bread and 28 cartons of juice each bread is $3 and each juice ca

rton is $4 how much money does he have left

2 answers:

Goshia [24]2 years ago

7 0

-78 dollars which means he owes his mom 78 dollars

Leviafan [203]2 years ago

3 0

He doesn't have a positive number. Add $45 and $112 together and it exceeds $79

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Help please i dont know this thank you<33

jok3333 [9.3K]

Answer:

42
35
16

Step-by-step explanation:

Put the value where the variable is and do the arithmetic. It can save some steps to simplify the expression first.

35 -c³ +8 = 43 -c³

<u>c = 1</u>

43 - 1³ = 43 -1 = 42

<u>c = 2</u>

43 - 2³ = 43 -8 = 35

<u>c = 3</u>

43 -3³ = 43 -27 = 16

The values that go in the blanks are 42, 35, 16.

_____

<em>Additional comment</em>

It does not take long to learn how to use a spreadsheet for evaluating the same formula with a number of different values of the variable(s). Graphing calculators can do this, too. It is always appropriate to use the right tool for the job.

Familiarity with multiplication and addition facts is a very good place to start. It is also useful to memorize the squares and cubes of small integers. The latter are needed here.

3 0

2 years ago

A bag of marbles has 5 green, 2 yellow, 8 red, and 3 purple marbles. What is the probability of picking a red marble, not replac

hram777 [196]

Sample space ={5G, 2Y, 8R, 3P} =18 POSSIBLE OUTCOME

1st draw: P(R) = 8/18 = 4/9 = 0.444
2nd draw (no replacement, means already one Red is picked up, so the sample space has been reduced): P(another one more RED) = 7/17 =0.411

7 0

3 years ago

Create an equivalent expression that includes a set of parentheses that make the value of the expression 5. Remember, you can ha

weqwewe [10]

32 divided by 10 minus 8 divided by 2 minutes 3 is -3.8 if that’s what ur asking

7 0

3 years ago

Please help me asap!!

jarptica [38.1K]

Answer: m∠6=18

3x-15=x+7

add 15 to both sides

3x-15+15=x+7+15

3x=x+7+15

3x=x+22

subtract x from both sides

3x-x=x+22-x

3x-x=22

2x=22

divide both sides by 2

2x÷2=22÷2

x=22÷2

x=11

plug it into the equation

11+7=18

m∠6=18

I hope this is good enough:

7 0

3 years ago

Prove the trig identity: tan^2 x cos^2 x = (sec^2 x -1)(1-sin^4 x)/1+sin^2 x

ella [17]

Answer:

See steps below

Step-by-step explanation:

We need to work with each side of the equation at a time:

Left hand side:

Write all factors using the basic trig functions "sin" and "cos" exclusively:

$tan^2(x)\,cos^2(x)=\frac{sin^2(x)}{cos^2(x)} cos^2(x)=sin^2(x)$

now, let's work on the right side, having in mind the following identities:

a) $sec^2(x)-1=tan^2(x)=\frac{sin^2(x)}{cos^2(x)}$

b) $1-sin^4(x) =(1-sin^2(x))\,(1+sin^2(x))$

c) $1-sin^2(x)=cos^2(x)$

Then replacing we get:

$\frac{(sec^2(x)-1)\,(1-sin^4(x))}{1+sin^2(x)} =\frac{sin^2(x)(1+sin^2(x))(1-sin^2(x))}{cos^2(x)(1+sin^2(x)))} =\frac{sin^2(x)(1+sin^2(x))\,cos^2(x)}{cos^2(x)(1+sin^2(x)))}=sin^2(x)$

Therefore, we have proved that the two expressions are equal.

5 0

3 years ago