Negative four times positive nine

Mathematics

1 answer:

elena-14-01-66 [18.8K]3 years ago

3 0

Answer: —36

Step-by-step explanation:

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Andrew buys books and videos in a store. He uses the expression 4b + 8v to find the cost of what he is buying, where b is the nu

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Answer:

Step-by-step explanation:

1) Plug In (when you plug in you replace the defined variable with the number given. usually you have to find the numbers to plug in but since they're already given to you you just plug them in.) 4(3) + 8(7)=T T= total cost

2) Multiply 4*3=12 8*7=56

3) Add 12+56=68

4) <u>T=68</u>

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3 years ago

Emma started biking to the coffee shop traveling 15 mph, after some time the bike got a flat so Emma walked the rest of the way,

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Answer:

$75\text{ miles, }28\text{ miles}$

Step-by-step explanation:

GIVEN: Emma started biking to the coffee shop traveling $15 \text{mph}$ , after some time the bike got a flat so Emma walked the rest of the way, traveling $7 \text{mph}$ If the total trip to the coffee shop took $9 \text{hours}$ and it was $103 \text{miles}$ away.