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weeeeeb [17]
3 years ago
9

There are 75 envelopes in a package. How many envelopes are there in 7 packages?

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
8 0
<span>The question is asking us to calculate how many envelopes are there in 7 packages if there are 75 in a package. For example: in 1 package there are 75 envelopes. In 2 packages there are 7 * 2 = 150 envelopes. In general, formula is : 75 * n, where n is the number of packages. Therefore, we will multiply 75 by 7. 75 * 7 = 525. Answer: B ) 525 envelopes.</span>
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Please someone help me
Vanyuwa [196]
1.
1/4 is less then 2/4 or 1/2so if the denominator is equal it will be easier to multiply
3 0
3 years ago
Simplified?
kap26 [50]

Answer:

Option B

Step-by-step explanation:

Given the following question:

In order to find the answer, we need to convert the scientific notation into standard notation and then simplify by subtracting the decimals. Then we convert the standard notation back into scientific notation.

0.0007 - (4.9\times 10^{-7} )
4.9\times10^{-7} =0.00000049
0.0007-0.00000049
0.0007-0.00000049=0.00069951
=0.00069951
0.00069951=6.9951 \times10^{-7}
=6.9951 \times10^{-7}

Your answer is "6.9951 × 10^-7" or option B.

Hope this helps.

3 0
2 years ago
(Geometry) The answers are x = 15 and y = 9 but I don't know how. Help me understand this
Kryger [21]

Check the picture below.

\bf \stackrel{\measuredangle DAC}{4y+2x}~~=~~\stackrel{\measuredangle BCA}{9y-x}\implies 2x=5y-x\implies 3x=5y\implies \boxed{x=\cfrac{5y}{3}} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\measuredangle DAB}{[(4y+2x)+35]}~~+~~\stackrel{\measuredangle ADC}{5x+4}~~=~~180\implies 4y+2x+5x+39 = 180 \\\\\\ 4y+7x+39=180\implies 4y+7x=141\implies \stackrel{\textit{substituting "x"}}{4y+7\left( \boxed{\cfrac{5y}{3}} \right)} = 141

\bf 4y+\cfrac{35y}{3}=141\implies \stackrel{\textit{multiplying both sides by }\stackrel{LCD}{3}}{3\left( 4y+\cfrac{35y}{3} \right)=3(141)}\implies 12y+35y=423 \\\\\\ 47y=423\implies y=\cfrac{423}{47}\implies \blacktriangleright y = 9 \blacktriangleleft \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{since we know that}}{x=\cfrac{5y}{3}}\implies x = \cfrac{5(9)}{3}\implies \blacktriangleright x = 15 \blacktriangleleft

4 0
3 years ago
Convert 3.5 • 10^4 to standard form.
timofeeve [1]

3.5\cdot10^4=35000

7 0
3 years ago
A boat travels 115 km in 3 hours. How far can it travel in 9 hours?
rodikova [14]

Answer:

345 km

Step-by-step explanation:

9 divided by 3 = 3

115 x 3 = 345

8 0
2 years ago
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