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
sergeinik [125]
3 years ago
8

If the temperature was -4 yesterday and 23 today what is the change in temperature

Mathematics
2 answers:
Bess [88]3 years ago
7 0
27 degrees add four then 23 and you get 27
Anika [276]3 years ago
5 0
19 is the answer because is -4 plus 23 to find the answer hopefully that will help
You might be interested in
How are the graphs of the function f(x)= square root 16^x and g(x)=3 square root 64^x related
34kurt

A is the correct awner

8 0
3 years ago
A certain solution of salt water is 10% salt and weighs 50 pounds. more salt must be added to produce a solution that is 25% sal
Semenov [28]

Answer

7.5 pounds

Step-by-step explanation:

Since adding x grams of salt will bring th percentage of the salt to 25

Hence. 10% of the 50 gram gives. 5 gram initial salt before it is added.

5+ x/ 50 * 100= 25/

5+x /50 = 0.25

5+x = 12.5

X= 12.5- 5

X= 7.5pounds

8 0
3 years ago
4.8.4 Raw materials are studied for contamination. Suppose that the number of particles of contamination per pound of material i
forsale [732]

Answer:

700 lbs and 3.742

Step-by-step explanation:

Given that raw materials are studied for contamination. Suppose that the number of particles of contamination per pound of material is a Poisson random variable with a mean of 0.02 particle per pound.

a) To get 14 particles of contamination we must have

expected number of pounds = \frac{14}{0.02} \\=700

b) Since for 700 pounds particles expected are 14 we can say in  a Poisson distribution mean and variance are equal

i.e. Var (700 lbs to obtain 14 particles of contamination ) = 14

Std deviation =\sqrt{14} =3.742

5 0
3 years ago
X2 + 8x = 15 help me ​
svlad2 [7]

Answer:

x₁ = - 4 + √31

x₂ = - 4 - √31

Step-by-step explanation:

x² + 8x = 15

x² + 8x - 15 = 0

x = [- 8 ± √8² - 4×1×(-15)]/(2×1)

x = (-8 ± 2√31)/2

x₁ = (-8 ± 2√31)/2

x₁ = - 4 + √31

x₂ = - 4 - √31

3 0
3 years ago
Read 2 more answers
Can some one help me find the 5 coordinates that's it. And I'll plug them into my equation thanks c:
avanturin [10]
(0,0), (-4,-2), (-4,3), (-9,-3), (-9,3)
7 0
3 years ago
Read 2 more answers
Other questions:
  • For what values of θ on the polar curve r=θ, with 0≤θ≤2π , are the tangent lines horizontal? Vertical?
    8·1 answer
  • Kim and Susan are playing a tennis match where the winner must win 2 sets in order to win the match.For each set the probability
    8·1 answer
  • The water level in the aquarium's shark tank is always greater than 25 feet. If the water level decreased by 6 feet during clean
    7·1 answer
  • What does it mean for a value to be non-negative?
    9·1 answer
  • How do i solve this 9x-5+7(x-3)-2(7+4x)-3x
    5·1 answer
  • What is the value of the radical expression shown below?
    15·2 answers
  • Please help if you can
    15·1 answer
  • Find the four arithmetic means between -21 and -36.
    14·1 answer
  • Pls hel me I’m stuck on this question
    7·2 answers
  • –42t + 80t + –59t − –97 = –29
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!