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3 years ago

Plz help me get the answer to these

Mathematics

2 answers:

Pavlova-9 [17]3 years ago

8 0

Remove the brackets

-5a + 9b + 7a combine -5a and 7a

7a - 5a + 9b

2a + 9b Answer

Don't go any further. There is nothing else to do. These are unlike terms and cannot be reduced or combined.

Colt1911 [192]3 years ago

4 0

Step-by-step explanation:

$(-5a+9b)+7a\qquad\text{combine like terms}\\\\=(-5a+7a)+9b\\\\=2a+9b$

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Which expression has a value that is equivalent to 5n+13 when n= -15

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What is the distance between the points (5.-18) and (8,

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Answer:

$\sqrt{10}$

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3 years ago

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Subtract.

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3 years ago

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Simplify the expression.<br> -5+i/2i

Lostsunrise [7]

Answer:

$\rm - \dfrac{11}{2}$

Step-by-step explanation:

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3 years ago

If two trucks leave a given city on highways making an angle of 132 degrees with one another, traveling at 45 and 55 miles per h

Law Incorporation [45]

Answer:

183 miles to the nearest mile.

Step-by-step explanation:

Distance =Speed X Time

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We want to find the Distance BC denoted by a between the trucks.

Using Cosine Rule,

a²=b²+c²-2bcCos A

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