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2 years ago

4/5 of 40

Mathematics

1 answer:

algol [13]2 years ago

3 0

4/5 of 40 = 32
1/3 of 3 = 1
1/3 of 15 muffins = 10 muffins

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The graph of the function f(x)= x2 − 4x + 6 is shown here. What is its axis of symmetry?

alisha [4.7K]

X=-b/2a

x = 4/2=2

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2 years ago

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A piece of wood is 1212 feet long, and a nail is 33 inches long. The piece of wood is how many times as long as the nail?

qaws [65]

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2 years ago

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

2 years ago

What is the lowest common denominator of the following set of fractions: 1/6 , 13/27 , 4/5 , 3/10 , 2/5 ?

Serga [27]

Answer:

LCD = 270

Equivalent Fractions with the LCD

1/6 = 45/270

13/27 = 130/270

4/5 = 216/270

3/10 = 81/270

2/5 = 108/270

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2 years ago

I need help with this

Ksenya-84 [330]

Answer:

6.7-(-2.5)=9.2 6.7+(-2.5)=4.2 Neither

2.5 + 6.7 6.7 - 2.5 2.5 - 6.7

-2.5 + 6.7 -2.5 - 6.7

-6.7 + 2.5

7 0

2 years ago