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3 years ago

Easy points

Mathematics

1 answer:

goblinko [34]3 years ago

6 0

Answer: 2

Step-by-step explanation:

try each value in the equation

2(0) + 1 = 3

0 + 1 = 3

1 ≠ 3

so 0 doesn’t work

2(1) + 1 = 3

2 + 1 = 3

3 = 3

this works, so the answer is 1

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Julia is going to the store to buy candies. Small candies cost $4 and extra-large candies cost $12.She needs to purchase at leas

BartSMP [9]

Answer:

Small candies $=9$

Extra large candies $=12$

Step-by-step explanation:

Let small candies $=x$

Extra large candies $=y$

the number of candies is at least $20$ .

$x+y\geq20$

Cost of $1$ small candy $=\$4$

Cost of $1$ extra large candy $=\$12$

but she has only $\$180$ to spend

$4x+12y\leq180$

Solve for

$x+y=20.......(1)\\4x+12y=180.....(2)\\eqn(2)-eqn(1)\times4\\8y=100\\y=\frac{100}{8} \\y=\frac{25}{8} \\from\ eqn(1)\\x+\frac{25}{2}=20\\ x=20-\frac{25}{2} \\x=\frac{15}{2}$

Since number of candies should be integer.

let $x=7,y=13$

total spend $4\times7+12\times13=184$ which is more than $\$180$ , so this combination is not possible.

$let\ x=8,y=12\\8\times4+12\times12=176$

She has $\$4$ more so she can buy $1$ more small candy.

Hence small candy $=9$

extra large candy $=12$

4 0

3 years ago

Simplifying Rational Expressions

Evgen [1.6K]

B^-2 / b^-3 = b^(-2-(-3) = b^1 = b

answer is d

4 0

3 years ago

Solve the equation for m:<br><br> m/5 = 60

alex41 [277]

Answer:

m = 300

Step-by-step explanation:

$m/5 = 60$

multiply both sides of the equation by 5

$m = 60 * 5 = 300$

3 0

2 years ago

Read 2 more answers

Simplify.

marin [14]

1/2+(3/8−1/8)^2

= 1/2+(2/8)^2

= 1/2+(1/4)^2

= 1/2 + 1/16

= 8/16 + 1/16

= 9/16

Answer

9/16

3 0

3 years ago

Read 2 more answers

The price of a $250 item after successive discounts of 20% and<br> 30% is?

Ivan

Answer:

The price of item after successive discounts are 20% and 30% is $140.

Step-by-step explanation:

The marked price of item is $250.

Two successive discounts are 20% and 30%.

Price of item after discounts of 20% is

$250-\frac{20}{100}(250)=250-50=200$

New price of item after first discount is $200.

Price of item after second discount, i.e., 30% is

$200-\frac{30}{100}(200)=200-60=140$

Therefore, the price of item after successive discounts are 20% and 30% is $140.

3 0

3 years ago