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choli [55]
3 years ago
14

Which number line model represents the expression -4+7.25

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
4 0

Answer: c

Step-by-step explanation: start at -4 then add 7 to that then .5

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Which quadrant is (-4,-6) in?<br> A) I. <br> B) II. <br> C) III. <br> D) IV.
andrey2020 [161]
The quadrant is the 4th because quadrant 4 has all negatives
6 0
4 years ago
Read 2 more answers
Weinstein, McDermott, and Roediger (2010) con- ducted an experiment to evaluate the effectiveness of different study strategies.
anastassius [24]

Answer:

a) The number of correct answers

b) Discrete

c) Ratio        

Step-by-step explanation:

We are given the following in the question:

Experiment:

Evaluate the effectiveness of different study strategies. All students were then given a test on the passage material and the researchers recorded the number of correct answers.

a) The dependent Variable

The number of correct answers given is the dependent variable because it depends on the number of times the passage is read.

b) Nature of dependent variable.

  • It is a discrete variable.
  • Since, the number of questions will always be expressed in whole numbers and cannot be expressed as decimals.
  • They are always counted and not measured.

c) Scale of measurement

  • Ratio is used to measure the dependent variable because true zero for the number of correct questions answered exist.
  • If the measure is zero that means truly no questions were answered correctly.
5 0
3 years ago
F the value of x decreases by 6, how does the value of m(x + 9) change?
Yuki888 [10]

start with y= m(x+9)

Use the distributive property:

y= mx+9m

Now you want x to decrease by 6:

so y ' = m(x-6) + 9m

Use distributive property again:

y'= mx - 6m + 9m

y' = (mx+9m) - 6m

y' = y - 6m

So the value of y decreases by 6m.

3 0
3 years ago
For f(x) = 3x +2 and g(x)=x²-5, find (f•g)(x)​
8_murik_8 [283]

Answer:

2/(x²-5)+3x(x²-5)

Step-by-step explanation:

<h2>Mark as brainlest answer</h2>

3 0
3 years ago
Rachel has 250 beads. she has 79 purple beads, 94 green beads, and the rest are yellow.how many yellow beads does Rachel have?
igomit [66]
She has 77 yellow beads

250-94=156
156-79=77 beads
3 0
3 years ago
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