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
AnnyKZ [126]
3 years ago
10

Help me i need help with this question its really hard pre test

Mathematics
2 answers:
Vinvika [58]3 years ago
4 0
A:280
60/15=4
X/70=4
70 times 4 = 280
Stels [109]3 years ago
3 0

Answer:

Answer is A

Step-by-step explanation:

You might be interested in
PLS HELP ASAP ILL GIVE BRAINLKEST PLS THANKSS
Ilya [14]

Answer:

1. y=x+9

2. y=x+8

6 0
3 years ago
Read 2 more answers
How much lower was the 6 a.m temperature in juneau than in chicago
Tatiana [17]
What we’re the two temperatures in both locations? Ima need some info to answer lol
4 0
2 years ago
Use scientific notation to find the product of 20.5 × 10 7 and 0.000036
Likurg_2 [28]
<span>Use scientific notation to find the product of 20.5 × 10 7 and 0.000036

the product of these 2 is 7380</span>
8 0
3 years ago
YOU Will be SHOWERED With POINTS IF U HELP ME
Volgvan

Answer: C

<u>Step-by-step explanation:</u>

f(x) = 26.2 - 0.1x

f(100) = 26.2 - 0.1(100)

         = 26.2 = 10.0

         = 16.2

f(5-) = 26.2 - 0.1(50)

       = 26.2 - 5.0

       = 21.2

******************************************************

Answer: D

<u>Step-by-step explanation:</u>

f(x) = 2|x - 3| + 1

2 units right: f(x) = 2|x - (3 + 2)| + 1

                           = 2|x - 5| + 1

3 0
3 years ago
Read 2 more answers
The probability distribution of a random variable X is given. x 1 2 3 4 P(X = x) 0.4 0.1 0.3 0.2 Compute the mean, variance, and
Readme [11.4K]

Mean:

E(X) = \displaystyle \sum_{x\in\{1,2,3,4\}}x\,P(X=x) = 1\times0.4 + 2\times0.1 + 3\times0.3 + 4\times0.2 = \boxed{2.3}

Variance:

\displaystyle V(X) = E\left((X-E(X))^2\right) = E(X^2) - E(X)^2 \\\\ E(X^2) = \sum_{x\in\{1,2,3,4\}}x^2\,P(X=x) = 1^2\times0.4 + 2^2\times0.1 + 3^2\times0.3 + 4^2\times0.2 = 6.7 \\\\ \implies V(X) = 6.7 - 2.3^2 = \boxed{1.41}

Standard deviation:

\sigma_X = \sqrt{V(X)} = \sqrt{1.41} \approx \boxed{1.19}

5 0
3 years ago
Other questions:
  • !!!!!GIVING BRAINLIEST!!!!!
    13·2 answers
  • An example in which a percentage is greater than 100%
    9·1 answer
  • My number has ones, tenths and hundredths. Rounding to the nearest whole number, you get 4. Rounding it to the nearest tenth, yo
    9·2 answers
  • Solve the equation for y.<br><br> 6y+x=8
    6·1 answer
  • The table shows the results of a survey about after-school activities.
    15·2 answers
  • Select from the following pairs of events all the pairs that are independent.
    7·1 answer
  • How to solve (x+7)(x-9)&gt;0
    8·1 answer
  • Kim and Ben are planting a garden. Kim plants 24 flowers in 2 hours. Ben plants 33 flowers in 3 hours. Whose rate is faster?
    15·1 answer
  • I need help with these problem PLEASE HELP
    11·1 answer
  • Solve by elimination 2y=-24-8x 6x+18=5y
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!