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Volgvan
3 years ago
6

ASAP please help me with this

Mathematics
2 answers:
Art [367]3 years ago
4 0

Answer:

Option C, -0.2C

Step-by-step explanation:

<u>Step 1:  Subtract the first 6 hours</u>

4 + 6(-0.8)

4 - 4.8

-0.8

<u>Step 2:  Add the next 2 hours</u>

-0.8 + 2(0.3)

-0.8 + 0.6

-0.2

Answer:  Option C, -0.2C

jeka57 [31]3 years ago
3 0
The answer is C.
Explanation:
You start with a temperature of 4 degrees. You then need to times -0.8 x 6 to see how the temperature changed over time. This equals -4.8. You have to then do 4 -4.8 which equals = -0.8.
The equation you do next is 0.3 x 2 because you times the temperature (0.3) by how many hours (2)
This then equals = 0.6
You then get your answer from the 2 equations, -0.8 + 0.6, which equals -0.2. And that’s your final answer
Hope this helps :)
You might be interested in
a) 3∕5= 60∕100= 40% (resolvido) b) 11∕4= c) 4∕20= d) 9∕5= e) 10∕200= 5∕100= 5% (resolvido) f) 8∕200= g) 30∕300=
Assoli18 [71]

Answer:

En cada expresión queremos obtener 100 en el denominador.

Notar que en la primer eq. tendríamos:

a) 3/5 = (20/20)*(3/5) = (20*3)/(20*5) = 60/100 = 0.6  (corresponde a 60%)

b) 11/4 = ?

Acá el denominador es 4

tenemos que encontrar un número k tal que:

k*4 = 100

k = 100/4 = 25

Entonces podemos multiplicar denominador y numerador por 25.

11/4 = (25/25)*(11/4) = (25*11)/(25*4) = 275/100 = 2.75 (corresponde a 275%)

c) 4/20

el denominador es 20, entonces tenemos que resolver:

20*k = 100

k = 100/20 = 5

multiplicamos denominador y numerador por 5:

(5/5)*(4/20) = (5*4)/(5*20)  =  20/100 = 0.2  (corresponde al 20%)

d) 9/5

el denominador es 5, entonces debemos resolver:

5*k = 100

k = 100/5 = 20

Debemos multiplicar denominador y numerador por 20

(20/20)*(9/5) = (20*9)/(20*5) = 180/100 = 1.8  (corresponde a 180%)

e) 10/200 = 5/100 = 0.05  (corresponde al 5%)

f) 8/200

Se resuelve de similar forma al de arriba (que ya tenias resuelto).

Aca el denominador eso 200, entonces tenemos que tener:

200*k = 100

k = 100/200 = 1/2

Entonces multiplicamos numerador y denominador por 1/2

(1/2/1/2)*(8/200) = (8*1/2)/(200*1/2) = 4/100 = 0.04 (corresponde al 4%)

g) 30/300

aca el denominador es 300

Entonces:

300*k = 100

k = 100/300 = 1/3

Multiplicamos numerador y denominador por 1/3

(1/3/1/3)*(30/300) = (30*1/3)/(300*1/3) = 10/100 = 0.1  (corresponde al 10%)

3 0
3 years ago
Help please I am in dire need
DiKsa [7]

Answer:

Answer is d=9t.

Step-by-Step:

4.5/.5=9

6.75/.75=9

13.5/1.5=9

7 0
3 years ago
Read 2 more answers
Solve the proportion: 6/x = 21/28
maria [59]
X=8
Hope this helps <3
6 0
3 years ago
A civil engineer is mapping the overhead clearance of his family's property on a coordinate grid. The ground is represented by t
elena55 [62]
The way you wrote the question is unable to understand
3 0
3 years ago
If a formula of a triangle is 18 = (h - 1) x 6 x .5 how would you get your answer?
V125BC [204]

Answer:

h = 7

Step-by-step explanation:

18 = (h - 1) × 6 × 0.5

simplify:

18 = 3(h - 1)

distribute the 3:

18 = 3h - 3

add 3 to both sides:

3h = 21

divide by 3:

h = 7

5 0
4 years ago
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