All categories

3 years ago

Please answer these i need this

Mathematics

2 answers:

kaheart [24]3 years ago

8 0

Answer:

No and 8

Step-by-step explanation:

The first one is No

4/5 is 0.8, not 20

The second one

6x =48

Divide both sides by 6

6x/6 =48/6

x = 8

Please give me brainliest

Len [333]3 years ago

5 0

Answer:

1. no

2. 8

Step-by-step explanation:

1. 20 does not equal 4/5

2. 6x=48 divide 6 on both sides

x=8

You might be interested in

Help please first with the right answer will be marked brainlyest

andre [41]

I believe this is correct

5 0

3 years ago

Read 2 more answers

A huge ice glacier in the Himalayas initially covered an area of 454545 square kilometers. Because of changing weather patterns,

guajiro [1.7K]

We have been given that a huge ice glacier in the Himalayas initially covered an area of 45 square kilo-meters. The relationship between A, the area of the glacier in square kilo-meters, and t, the number of years the glacier has been melting, is modeled by the equation $A=45e^{-0.05t}$ .

To find the time it will take for the area of the glacier to decrease to 15 square kilo-meters, we will equate $A=15$ and solve for t as:

$15=45e^{-0.05t}$

$\frac{15}{45}=\frac{45e^{-0.05t}}{45}$

$\frac{1}{3}=e^{-0.05t}$

Now we will switch sides:

$e^{-0.05t}=\frac{1}{3}$

Let us take natural log on both sides of equation.

$\text{ln}(e^{-0.05t})=\text{ln}(\frac{1}{3})$

Using natural log property $\text{ln}(a^b)=b\cdot \text{ln}(a)$ , we will get:

$-0.05t\cdot \text{ln}(e)=\text{ln}(\frac{1}{3})$

$-0.05t\cdot (1)=\text{ln}(\frac{1}{3})$

$-0.05t=\text{ln}(\frac{1}{3})$

$t=\frac{\text{ln}(\frac{1}{3})}{-0.05}$

$t=\frac{\text{ln}(\frac{1}{3})\cdot 100}{-0.05\cdot 100}$

$t=\frac{\text{ln}(\frac{1}{3})\cdot 100}{-5}$

$t=-\text{ln}(\frac{1}{3})\cdot 20$

$t=-(\text{ln}(1)-\text{ln}(3))\cdot 20$

$t=-(0-\text{ln}(3))\cdot 20$

$t=20\text{ln}(3)$

Therefore, it will take $20\text{ln}(3)$ years for area of the glacier to decrease to 15 square kilo-meters.

6 0

3 years ago

1.6.PS-25

gtnhenbr [62]

AAAASSAAAALAKSKSKDKDKDJFJJFJFJFJFJFJF

8 0

3 years ago

If f(x) = x2 – 25 and g(x) = x – 5, what is the domain of f/g(x)

olga2289 [7]

Domain of fg(x) is determined by the domain of g(x).g(x) has domain such that x is any real number.So domain fg(x) is x such that x is any real number.

6 0

3 years ago

Read 2 more answers

Follow nikespear37 tik tok

hjlf

Answer:

no >:)

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers