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
erma4kov [3.2K]
4 years ago
7

What is the sum of (-2)+3

Mathematics
2 answers:
Cloud [144]4 years ago
8 0
(-2) + 3 is the same as -2 + 3. If it add 3 to -2, the answer will be 1. (Positive 1.) I hope this helps!
Luba_88 [7]4 years ago
6 0

-2 + 3

This can also be displayed as 3 - 2.

-2 + 3 = 1

You might be interested in
Write an exponential function in the form y=ab^xy=ab
ivanzaharov [21]

Answer:

Step-by-step explanation:

let y=ab^x

x=0,y=18

18=ab^0=a

a=18

y=18b^x

when x=2,y=1152

1152=18b^{2}\\b^{2}=\frac{1152}{18}=64=8^2\\b=8\\so~y=18(8)^x

7 0
3 years ago
In a random sample of 380 cars driven at low altitudes, 42 of them exceeded a standard of 10 grams of particulate pollution per
alexdok [17]

Answer:

The test statistic for testing if the proportion of high-altitude vehicles exceeding the standard is greater than the proportion of low-altitude vehicles exceeding the standard is 3.234.

Step-by-step explanation:

We are given that in a random sample of 380 cars driven at low altitudes, 42 of them exceeded a standard of 10 grams of particulate pollution per gallon of fuel consumed.

In an independent random sample of 90 cars driven at high altitudes, 24 of them exceeded the standard.

Let p_1 = <u><em>population proportion of cars driven at high altitudes who exceeded a standard of 10 grams</em></u>.

p_2 = <u><em>population proportion of cars driven at low altitudes who exceeded a standard of 10 grams</em></u>.

So, Null Hypothesis, H_0 : p_1\leq p_2      {means that the proportion of high-altitude vehicles exceeding the standard is smaller than or equal to the proportion of low-altitude vehicles exceeding the standard}

Alternate Hypothesis, H_A : p_1>p_2      {means that the proportion of high-altitude vehicles exceeding the standard is greater than the proportion of low-altitude vehicles exceeding the standard}

The test statistics that will be used here is <u>Two-sample z-test statistics</u> for proportions;

                             T.S.  =  \frac{(\hat p_1-\hat p_2)-(p_1-p_2)}{\sqrt{\frac{\hat p_1(1-\hat p_1)}{n_1}+\frac{\hat p_2(1-\hat p_2)}{n_2} } }  ~  N(0,1)

where, \hat p_1 = sample proportion of cars driven at high altitudes who exceeded a standard of 10 grams = \frac{24}{90} = 0.27

\hat p_2 = sample proportion of cars driven at low altitudes who exceeded a standard of 10 grams = \frac{42}{380} = 0.11

n_1 = sample of cars driven at high altitudes = 90

n_2 = sample of cars driven at low altitudes = 380

So, the test statistics =  \frac{(0.27-0.11)-(0)}{\sqrt{\frac{0.27(1-0.27)}{90}+\frac{0.11(1-0.11)}{380} } }      

                                   =  3.234

The value of z-test statistics is 3.234.

7 0
3 years ago
13. To rent a car, you pay a one-time charge of $45 plus a charge of $0.29 for
deff fn [24]

Answer:

<em>The correct choice is (c) $79.80</em>

Step-by-step explanation:

The total charge for renting a car can be split into two parts:

A fixed one-time charge of $45

A variable charge of $0.29 per driven mile.

If I drive 120 miles, the variable charge will be 120*0.29 = $34.80

The total charge will be $45 + $34.80 = $79.80

The correct choice is (c) $79.80

7 0
3 years ago
On sunday,sheldon bought 4 and 1 half kg of plant food. he used 1 and 2 thirds kg on his strawberry plants and used 1 fourth kg
Nataly_w [17]
That's the answer you'll get. hope this was any help.

6 0
4 years ago
What is 55.412 to the nearest hundredth
Dmitry [639]

55.412 round to the nearest hundredth is 55.41

6 0
3 years ago
Read 2 more answers
Other questions:
  • Jason is building a 1 : 180 scale model of a real castle. his model has a rectangular base that is 3 feet wide and 4 feet long.w
    13·1 answer
  • WILL DO BRAINLY! Sally is trying to decide whether this triangle is a right triangle, so she measures the third side. The triang
    11·2 answers
  • Order the integers from least to greatest.<br> 15, -9, 75, 44, -12
    11·2 answers
  • WILL MARK BRAINLIEST!
    9·2 answers
  • Solve 4h = 92 for h.<br><br> h = ___
    14·2 answers
  • Rd
    12·1 answer
  • Please solve the problem below.
    5·1 answer
  • Last free brainliest of the day <br> answer this question <br> 12x4(6+5)x2
    15·2 answers
  • Find the lowest term of 1200:6​
    13·1 answer
  • a farmer uses 1/6 of his land to plant pineapples, 5/9 to plant durians and the remaining 48.5 acres to plant vegetables. calcul
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!