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Diano4ka-milaya [45]
3 years ago
13

What is the factored form x2-x-42

Mathematics
1 answer:
Alina [70]3 years ago
6 0

I believe that the it would be :

(x + 7) (x - 6)

So the answer would be D.

You might be interested in
Please answer a question the images.
Lyrx [107]

The distribution of the animals in the coral reef is an illustration of probability

<h3>The most likely animal</h3>

The distribution of the animals is given as:

Blue fish = 3

Yellow fish = 7

Sea turtle = 1

Eels = 3

The animal with the highest frequency is the most likely animal.

Hence, the Yellow fish is the most likely animal.

<h3>Which is more likely?</h3>

From the question, we have:

Blue fish = 3

Eels = 3

Both animals have the same frequency.

This means that Riley has equal chance of seeing a blue fish and an eel.

<h3>The probability of seeing an animal with fins</h3>

The animal with fins are:

Blue fish = 3

Yellow fish = 7

So, the probability is:

p = \frac{3 + 7}{3 + 7 + 1 + 3}

p = \frac{10}{14}

Simplify

p = \frac 57

Hence, the probability of seeing an animal with fins is 5/7

<h3>The least likely animal</h3>

The animal with the least frequency is:

Sea turtle = 1

So, the likelihood is:

p = \frac 1{14}

Hence, the sea turtle has the least likelihood of 1/14

<h3>Animals with equal likelihood</h3>

The Blue fish and the Eels have the same frequency of 3

This means that animals have equal likelihood

<h3>The probability of seeing each animal</h3>

We have:

Blue fish = 3

Yellow fish = 7

Sea turtle = 1

Eels = 3

Express as probability

Blue fish = 3/14

Yellow fish = 7/14

Sea turtle = 1/14

Eels = 3/14

Express the fractions as decimals

Blue fish = 0.214

Yellow fish = 0.500

Sea turtle = 0.071

Eels = 0.214

So, their likelihoods are:

Blue fish = Equally likely

Yellow fish = Certainly likely

Sea turtle = Unlikely

Eels = Equally likely

Read more about probabilities at:

brainly.com/question/25870256

3 0
2 years ago
Help me I don't get it
dem82 [27]
I think it's c, but I can't see the whole thing.
6 0
4 years ago
Find the length of PR from the given figure ( step by step ). ​
Vaselesa [24]

Answer:

PR = 39 cm

Step-by-step explanation:

Using Pythagoras' identity in the right triangle

PR² + PQ² = QR² , that is

PR² + 80² = 89²

PR² + 6400 = 7921 ( subtract 6400 from both sides )

PR² = 1521 ( take the square root of both sides )

PR = \sqrt{1521} = 39

6 0
3 years ago
Read 2 more answers
1. A family eats at a restaurant. The bill is $42. They have a coupon that gives them 15% off
Ludmilka [50]
<h2>a.</h2><h3>Solution:</h3>

42 - 42 \times 15\%

=42 -  42 \times  \frac{15}{100}

=42 -  21 \times  \frac{15}{50}

=42 -   \frac{315}{50}

= 42 - 6 \:  \frac{15}{50}

= 41 \:  \frac{50}{50}  - 6 \:  \frac{15}{50}

= 35 \:  \frac{35}{50}

= 35.70

<h3>Answer:</h3>

<u>T</u><u>h</u><u>e</u><u> </u><u>f</u><u>a</u><u>m</u><u>i</u><u>l</u><u>y</u><u> </u><u>d</u><u>i</u><u>d</u><u> </u><u>s</u><u>p</u><u>e</u><u>n</u><u>d</u><u> </u><u>$</u><u>3</u><u>5</u><u>.</u><u>7</u><u>0</u><u> </u><u>o</u><u>n</u><u> </u><u>t</u><u>h</u><u>e</u><u> </u><u>m</u><u>e</u><u>a</u><u>l</u><u> </u><u>a</u><u>f</u><u>t</u><u>e</u><u>r</u><u> </u><u>t</u><u>h</u><u>e</u><u> </u><u>c</u><u>o</u><u>u</u><u>pon</u>

<h2>b.</h2><h3>Solution:</h3>

35.70 + 42 \times 20\%

= 35.70 + 42 \times 0.2

= 35.70 + 8.4

= 44.10

<h3>Answer:</h3>

<u>T</u><u>h</u><u>e</u><u> </u><u>f</u><u>a</u><u>m</u><u>i</u><u>l</u><u>y</u><u> </u><u>d</u><u>i</u><u>d</u><u> </u><u>s</u><u>p</u><u>e</u><u>n</u><u>d</u><u> </u><u>$</u><u>4</u><u>4</u><u>.</u><u>1</u><u>0</u><u> </u><u>o</u><u>n</u><u> </u><u>t</u><u>h</u><u>e</u><u> </u><u>m</u><u>e</u><u>a</u><u>l</u><u> </u><u>i</u><u>n</u><u> </u><u>t</u><u>o</u><u>t</u><u>a</u><u>l</u><u>.</u>

#CarryOnLearning

#AnswerForTrees

#BrainlyBookSmart

4 0
3 years ago
If tommy rode his bike 4.3 miles a day, 3 days a week for 5 years delivering news papers and he dropped 22.7 newspapers every 1/
geniusboy [140]

Answer:

277 848 newspapers.

Step-by-step explanation:

Find out how much newspaper he drops for 4.3 miles.

1/4 = 0.25

4.3 miles ÷ 0.25 = 17.2

= 17

17 x 22.7 = 385.9

(Newspapers be dropped a day)

1 week of dropping newspapers = 385.9 x 3 = 1157.7

1 month of dropping newspapers = 1157.7 x 4 =

4630.8

1 year = 12 months

5 years = 12 x 5 = 60 months.

5 years/60 months of dropping newspapers = 4630.8 x 60 = 277 848

Tommy dropped 277 848 newspapers.

6 0
3 years ago
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