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
ioda
3 years ago
11

This morning, the temperature was 80 ⁰F. It dropped 5 degrees per hour. In how many (h) hours did the temperature drop to at mos

t 40 ⁰F? Using the inequality 80 - 5h ≤ 40, which solution makes sense?
a. h ≥ 8 (The temperature dropped for more than 8 hours.)

Selected:b. h ≤ 8 (The temperature dropped for 8 hours or less.)This answer is incorrect.

c. h ≥ 8 (The temperature dropped for 8 hours or more.)

d. h ≤ 8 (The temperature dropped for less than 8 hours.)
Mathematics
1 answer:
Annette [7]3 years ago
6 0

Answer: B or D

Step-by-step explanation:

5 times 8 (hours) is 40. Your input was correct, but you can try adding D too

You might be interested in
Suppose that a box contains 45 light bulbs, of which 36 are good and the other 9 are defective. Consider randomly selecting thre
Andrew [12]

Answer:

Step-by-step explanation:

Given that a box contains 45 light bulbs, of which 36 are good and the other 9 are defective.

Probability for any one to be defective as of now is \frac{36}{45} =0.80

a) P(E) = 0.80

b) After I draw we have 35 good ones and 9 defective

P(F/E) =\frac{35}{44} \\=0.796

c) P(G/EF)

This is the probability for iii bulb to be good given I and II are goog.

Once I and ii are good we have 43 bulbs with 34 good ones

P(G/EF) =\frac{34}{43} \\=0.7907

5 0
3 years ago
Un paracaidista que pesa 70 N es lanzado de un avión. halla su masa​
77julia77 [94]

Answer:

<em>La masa del paracaidista es 7.14 Kg</em>

Step-by-step explanation:

<u>Peso y Masa</u>

La masa de un objeto es una medida de la cantidad de material que el objeto posee. Sus unidades más comunes son el Kg, gr, lb, Ton.

El peso de un objeto de masa m es la fuerza con la cual la Tierra atrae al objeto a través de la aceleración de gravedad g. Sus unidades son iguales a las de cualquier fuerza, es decir, Nw, Kgf, Dina. Su fórmula es:

P=m.g

Si tenemos el peso P=70 N, podemos calcular la masa, despejándola de la fórmula:

\displaystyle m=\frac{P}{g}

Sustituyendo los valores:

\displaystyle m=\frac{70}{9.8}=7.14\ Kg

La masa del paracaidista es 7.14 Kg

8 0
3 years ago
Seven times the sum of a number and 8 equals 4​
gayaneshka [121]

Answer:

n= -52/7

Step-by-step explanation:

7(n+8)=4

(7×n)+ (7×8)=4

7n +56=4

7n +56-56=4-56

7n+0= -52

7n=-52

7n/7= -52/7

n= -52/7

3 0
2 years ago
Read 2 more answers
Help pls i need this done tonight i dont have much longer
zvonat [6]
Answer:
Jessica wants 180 plants in her garden.

Step-by-step explanation:
The formula for the area of the triangle is (1/2)*base*height.
So here, Let’s say 8 feet is the base and 15 feet is the height.
the area of the triangle would be (1/2)*8*15. That equals 60 square feet.
If Jessica wants 3 plants each square foot, then 60*3, which is 180 plants.

Note: * means the multiplication sign.
7 0
2 years ago
Read 2 more answers
What are the measures of ∠a, ∠b, and ∠c?
Fudgin [204]

Answer:

a should be 45

b should be 90

c should also be 45

Step-by-step explanation:

I know this because 180-135=45 for a

since c is also 45, beside c should be 135.

which means those angles are congruent.

since a triangle equals 180 degrees all together 180-45-45=90

so b is 90

correct me if im wrong

4 0
3 years ago
Other questions:
  • Answer asap
    6·1 answer
  • Why are halves a good choice for benchmark fractions for 1 1/3
    15·1 answer
  • If 7 boxes of energy bars cost $6.75 more than 4 boxes of energy bars, how much does each box cost?
    7·1 answer
  • Describe the effect of the transformation (x,y) to (x,7y)
    14·1 answer
  • Evaluate 7x – y if x = 9 and y = 3
    5·1 answer
  • 5. Why do routine events tend to fade from memory over time?
    11·1 answer
  • Do yall know 2-1 3/8
    8·1 answer
  • Omg help me asap my lesson is timed!
    13·1 answer
  • The area of a triangle is 528cm2. The length of its base is 33cm. Calculate the perpendicular height of the triangle
    11·2 answers
  • If the outlier is removed, which measure will not change?<br><br> mean<br> median<br> mode<br> range
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!