1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vladimir79 [104]
3 years ago
12

(5x-6)(-x+4) using the box method

Mathematics
1 answer:
Sophie [7]3 years ago
4 0

Answer:

-5x²+26x-24

Step-by-step explanation:

(5x-6)(-x+4)

=5x(-x+4)-6(-x+4)

=-5x²+20x+6x-24

=-5x²+26x-24

You might be interested in
<img src="https://tex.z-dn.net/?f=4859%20%5Cdiv%2023" id="TexFormula1" title="4859 \div 23" alt="4859 \div 23" align="absmiddle"
DerKrebs [107]
The answer is 211.26087
3 0
3 years ago
Read 2 more answers
Increase 100kg by 10%
Assoli18 [71]

Answer:

110kg

Step-by-step explanation:

You multiply 100 by 0.1 (because this is 10% as a decimal number) and you get 10. Add 10 to 100

8 0
3 years ago
What is the value of the expression (–5) -3?
fgiga [73]
The answer to (-5)-3 is -8. I may be wrong but I did the work.
8 0
3 years ago
Read 2 more answers
WILL MARK BRANLIEst
LenaWriter [7]

Answer:

click on the thanks button

5 0
3 years ago
The standard IQ test has a mean of 97 and a standard deviation of 17. We want to be
densk [106]

Let's call our estimate x. It will be the average of n IQ scores. Our average won't usually exactly equal the mean 97.  But if we repeated averages over different sets of tests, the mean of our estimate the average would be the same as the mean of a single test,

μ = 97

Variances add, so the standard deviations add in quadrature, like the Pythagorean Theorem in n dimensions.  This means the standard deviation of the average x is

σ = 17/√n

We want to be 95% certain

97 - 5 ≤ x ≤ 97 + 5

By the 68-95-99.7 rule, 95% certain means within two standard deviations. That means we're 95% sure that

μ - 2σ ≤ x ≤ μ + 2σ

Comparing to what we want, that's means we have to solve

2σ = 5

2 (17/√n) = 5

√n = 2 (17/5)

n = (34/5)² = 46.24

We better round up.

Answer: We need a sample size of 47 to be 95% certain of being within 5 points of the mean

6 0
3 years ago
Other questions:
  • What is the next number in this pattern?<br><br> 0, 3, 15, 63
    7·1 answer
  • Point E is located at (2, −3) and point F is located at (−2, −1). Find the y value for the point that is 3 over 4 the distance f
    10·1 answer
  • A six-sided number cube is “weighted” so that the numbers do not all have the same probability of landing up. The probability mo
    15·1 answer
  • Consider the following table that describes the mass of a kitten as weeks go by. If you know the kitten grows by 10% each week f
    6·1 answer
  • (05.05 LC)
    7·1 answer
  • There are 4 red marbles, 3 blue marbles, and 13 green marbles in a bag.
    10·1 answer
  • A 2 foot wide painting should be centered on a 14 foot wide wall. How many feet (x) should be on each side of the painting?
    15·1 answer
  • PLS TELL ME WHAT IT IS
    15·2 answers
  • What is the answer of this question ?
    5·1 answer
  • Is 3/8 bigger than 4/10
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!