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3 years ago

5

1. Solve:3

dle" class="latex-formula">
${ 3}^{ - 6} \times {3}^{2}$

1 answer:

xenn [34]3 years ago

4 0

3^(-6) • 3^(2) = 3^(-4) or 1/81

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The school math team was selling pizza slices for $2.00 and bottles of water for $1.50 to raise money. Overall, they sold 63 ite

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Step-by-step explanation:

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3 years ago

The ratio of two numbers is 3/7 . The sum of double the lowest number and triple the highest number is 2700. Find out the number

Tatiana [17]

Say x is the smaller of the two:
x/3=y/7
2x+3y=2700
solve and you get that
y=700, x=300

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4 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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.) A florist wishes to make bouquets of mixed spring flowers. Each bouquet is to be made up of tulips at $10 a bunch and daffodi

LekaFEV [45]

We have the following:

1.

let x a tulips

let y daffodils

therefore:

$\begin{gathered} x+y=15\rightarrow x=15-y \\ 10x+7y=(x+y)8\rightarrow10x+7y=120 \end{gathered}$

solving:

$\begin{gathered} 10\cdot(15-y)+7y=120 \\ 150-10y+7y=120 \\ 10y-7y=150-120 \\ 3y=30 \\ y=\frac{30}{3}=10 \end{gathered}$

for x:

$x=15-10=5$

Therefore, the answer is 5 tulips and 10 daffodils

2.

let x a 30% silver

let y a 55% silver

$\begin{gathered} x+y=800\rightarrow x=800-y \\ 30x+55y=40\cdot(x+y)\rightarrow30x+55y=32000 \end{gathered}$

solving:

$\begin{gathered} 30\cdot(800-y)+55y=32000 \\ 24000-30y+55y=32000 \\ 25y=32000-24000 \\ y=\frac{8000}{25} \\ y=320 \end{gathered}$

for x:

$x=800-320=480$

Therefore, the answer is 480 pounds of 30% silver and 320 pounds of 55% silver

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1 year ago

What are the numerical measures of the angles?

vredina [299]

ANSWER

The sum of m∠DEA and m∠AEB is 180°.

Reason: The sum of angles on a straight line is always 180°.

$(x + 25)+(9x + 10)=180 \degree$

Group like terms to get,

$x+9x=180-25-10$

Simplify, and get,

$10x = 145$

Divide both sides by 10 to get,

$x = 14.5$

We substitute this value to get the required angles.

$m \: ∠DEA=x+25$

$m \: ∠DEA = 14.5 + 25 = 39.5 \degree$

$m\:∠AEB=9x+ 10$

$m\:∠AEB = 9(14.5) + 10$

$m\: ∠AEB=130.5 + 10 = 140.5 \degree$

7 0

3 years ago

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