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3 years ago

7

A dog buries 4 new bones in her backyard. If b represents the number of bones the dog previously had buried, write an expression

for the new amount of buried bones.

1 answer:

Lemur [1.5K]3 years ago

6 0

Answer:

$b+4$

Step-by-step explanation:

Before, we had b bones. Now, we have four more, so $b+4$ .

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Find the percent of decrease from 280 to 210. Round to the nearest tenth of a percent, if necessary.

Vlada [557]

To find the decreased percentage,here's what we can do:
$\frac{originl \: value - new \: value}{originl \: value} \times 100\%$

In this case,the eqaution would be:
$\frac{280 - 210}{280} \times 100\% \\ = \frac{70}{280} \times 100\% \\ = \frac{1}{4} \times 100\% \\ = 25\%$
Hope it helps!

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4 years ago

Match the expression with its name.

IrinaVladis [17]

Ax^2 + bx + c is a quadratic trinomial. Therefore, ur expression is a quadratic trinomial......it is a trinomial because it has 3 terms.....quadratic means the highest exponent is 2.

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4 years ago

If a student has an average exam score between 70 and 79, he will earn a grade of C in his algebra course. Suppose he has three

goldenfox [79]

Answer:

(64,86.5)

Step-by-step explanation:

find the case where he gets 70 and the case where he gets 79

if his average is 70:

(75+62+85+2x)/5=70

(222+2x)/5=70

222+2x=350

2x=128

x=64

if his average is 79:

(75+62+85+2x)/5=79

(222+2x)/5=79

222+2x=395

222+2x=395

2x=173

x=86.5

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mrs. West took her class on a field trip to the museum cost of admission for the girls was $90 and the cost of admission for the

timofeeve [1]

Answer:

15 dollars

Step-by-step explanation:

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3 years ago

What is the slope of the line in the graph?

NeX [460]

X= -1 Y= 1

X= Negative 1 Y= Positive 1

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