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3 years ago

(4x+3) (6x-10) What's the perimeter

Mathematics

2 answers:

dsp733 years ago

6 0

Answer:

Expand the polynomial using the FOIL method.

24 x ^2 − 22 x − 30

Step-by-step explanation:

Hope this helps! Please consider marking brainliest! I hope you have an amazing day. Always remember, your smart and you got this! -Alycia :)

Sophie [7]3 years ago

3 0

The perimeter is 30 I think

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Which complex number has an absolute value of 5?

defon

The answer would be -5

5 0

3 years ago

Help please i really need it

Vsevolod [243]

Problem 1

Answer: x = 9

----------

Explanation:

For now focus on triangle DEF. We need to find the missing angle D.

D+E+F = 180

D+71+42 = 180

D+113 = 180

D = 180-113

D = 67

In order for DE to be parallel to GH, the alternate interior angles EDF and GHF must be congruent

Let's see what happens when we force them to be equal

angle EDF = angle GHF

67 = 5x+22

67-22 = 5x

45 = 5x

5x = 45

x = 45/5

x = 9

==========================================

Problem 2

Answers:

Converse: "if it is winter, then it is snowing"

Inverse: "If it is not snowing, then it is not winter"

Contrapositive: "If it is not winter, then it is not snowing"

----------

Explanation:

The original conditional is in the form "If P, then Q". The P and Q are placeholders for logical statements.

We then have the following forms

converse = "if Q, then P" (swap P and Q)
inverse = "If not P, then not Q" (negate each)
contrapositive = "If not Q, then not P" (do both inverse and converse operations)

==========================================

Problem 3

Answer: choice B) "If the sum of two angles is not 180 degrees, then they aren't supplementary"

----------

Explanation:

Refer to problem 2 for the general form of the inverse. We negate each of the P and Q to get our final answer.

==========================================

Problem 4

Answer: Choice C) "If I do not need an umbrella, then it is not raining"

----------

Explanation:

Refer to problem 2 for the general form of the contrapositive. We swap P and Q, and negate each.

==========================================

Problem 5

Answer: Choice A) "If two lines have opposite slopes, then they are perpendicular"

----------

Explanation:

Refer to problem 2 for the general form of the converse. We swap the positions of P and Q.

4 0

3 years ago

Answer number 3 please

Roman55 [17]

Answer:

100 cm square?

Step-by-step explanation:

1 meter square = 100 cm square

4 0

2 years ago

Read 2 more answers

The scores on the Wechsler Adult Intelligence Scale are approximately Normal with mean = 100 and standard deviation = 15The prop

gregori [183]

Answer:

b) 0.025

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 100, \sigma = 15$