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3 years ago

7 Solve the equation x^2 - 8x + 15 = 0.

Mathematics

2 answers:

aleksandr82 [10.1K]3 years ago

6 0

Answer:

x = -5

Evidence to support reasoning:

Oksanka [162]3 years ago

3 0

Answer:

x=5 x=3

Step-by-step explanation:

x^2 - 8x + 15 = 0

Factor

What 2 numbers multiply to 15 and add to -8

-5*-3 = 15

-5-3 = -8

(x-5)(x-3) =0

Using the zero product property

x-5 =0 x-3 =0

x=5 x=3

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Lynn measured the length of her front yard by counting her strides. The yard measured 18.5 feet long. Emily measured the same ya

Shalnov [3]

Answer:

8.11%

Step-by-step explanation:

We need to find the percentage error. We can follow the formula shown below:

$PE=\frac{New-Orig}{Orig}*100$

Where

PE is the Percentage Error

New is the newest measure (given as 20 feet)

Orig is the original, or first, measure (given as 18.5)

Substituting and finding the PE:

$PE=\frac{New-Orig}{Orig}*100\\PE=\frac{20-18.5}{18.5}*100\\PE=\frac{1.5}{18.5}*100\\PE=8.11$

Tagging the percentage , percent error is about 8.11%

7 0

3 years ago

Select the correct answer. Which of the following represents a function? A. A value 3 in x corresponds to negative 5 in y and 0

poizon [28]

The item which represents a function is: B. A graph which plot the points (-5, 3), (-3, 1), (-1, -1), (1, -1), (3, 1), and (5, 3) on the x-y coordinate plane.

<h3>What is a function?</h3>

A function is a mathematical expression which is used to define and represent the relationship existing between two or more variable.

Also, it is very important to note that a function can't have the same value of x for different values of y. Thus, a graph which plot the points (-5, 3), (-3, 1), (-1, -1), (1, -1), (3, 1), and (5, 3) on the x-y coordinate plane represents a function.

Read more on function here: brainly.com/question/10439235

#SPJ1

3 0

2 years ago

PLEASE HELP WITH MATH QUESTION!!

mr_godi [17]

C) 30, 60, 90 because right off the bat, the largest angle is 90 degrees and it is the ONLY answer in which it’s other 2 angles are summed up to equal to it. And the rest of the facts match up. 60 degrees is twice as 30

3 0

4 years ago

Aluate 18 - (2 + 6h), if h = 2

densk [106]

Answer:

Step-by-step explanation:

Simple, just plug in, distribute, then solve.

18 - (2+6(2))

18 - (2 + 12)

18 - 14 = 4.

3 0

4 years ago

Read 2 more answers

Triangle GHI is similar to triangle JKL. If angle H measures 60 degrees and angle L measures 25 degrees, what is the measure of

In-s [12.5K]

180 - (60 +25)
= 180 - 85
= 95

m<K = 95 degrees

answer: <span>D.) 95</span>

7 0

4 years ago