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3 years ago

Exercise 30 please , show work

Mathematics

2 answers:

mezya [45]3 years ago

6 0

$-8(2a-3b)-5(6b-4a)=\\
-16a+24b-30b+20a=\\
4a-6b$

ArbitrLikvidat [17]3 years ago

3 0

$-8(2a-3b)-5(6b-4a)=\\=-8 \times 2a -8 \times (-3b)-5 \times 6b-5 \times (-4a)= \\
=-16a+24b-30b+20a= \\
=20a-16a+24b-30b= \\
=(20-16)a+(24-30)b= \\
=4a-6b$

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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 family buys 5 airline tickets online. The family buys travel insurance that costs $17 per ticket. The total cost is $890. Le

timurjin [86]

Answer: Equation that represents this situation is 5(x+17) = 1495,

Price of one ticket is 282

Step-by-step explanation:

Here x represents the price of one ticket,

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Hence, the total cost of a person = x + 17

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But, According to the question,

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3 years ago

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JulijaS [17]

Translate words into numbers.

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First convert to improper fraction.

13/(10/7)

Then, note that division is the same as multiplying by the divisor's reciprocal.

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3 years ago

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What is the correct answer NEED ANSWER ASAP

Llana [10]

Answer:

Your answer is

x-int: (3 , 0) , (-3/2 , 0)

y-int: (0 , -9)

Step-by-step explanation:

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2 years ago

noname [10]

Answer: 7

Step-by-step explanation:

Given : The recommended daily allowance for vitamin c is 60 mg per day .

Then, for one whole week , the recommended allowance for vitamin c will be :-

$7\times60=420\text{ mg}$

Also, there are 70 mg of vitamin C per 100 g orange.

1 g = 1000 ml

The proportion of Vitamin C in 100 g = $\dfrac{70}{100000}=0.0007$

1 oz =28.3495 grams

Then, $3\ oz= 3\times28.3495=85.0485 \text{ gm}=85048.5\ mg$

Then, amount of vitamin C in 85048.5 mg = $0.0007\times85048.5=59.53395\approx59.53\ mg$

Then, the number of oranges have to eat each week to meet this requirement= $\dfrac{420}{59.53}\approx7$

Hence, about 7 oranges you would have to eat each week to meet this requirement.

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3 years ago