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ch4aika [34]
3 years ago
13

I NEED HELP ON THIS SO I CAN PASS MY MIDTERM T-T

Mathematics
1 answer:
jeka943 years ago
3 0
It’s the third one I hope you do goodddd
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7. If (0.2)x = 2 and log 2 = 0.3010, then the value of x to the nearest tenth is?​
prisoha [69]

<em><u>(0.2)x = 2.</u></em>

<em><u>Taking log on both sides</u></em>

<em><u>log (0.2)x = log 2.</u></em>

<em><u>x</u></em><em><u> </u></em><em><u>log (0.2) = 0.3010, [since log 2 = 0.3010].</u></em>

<em><u>x</u></em><em><u> </u></em><em><u>log (2/10) = 0.3010.</u></em>

<em><u>x</u></em><em><u> </u></em><em><u>[log 2 - log 10] = 0.3010.</u></em>

<em><u>x</u></em><em><u> </u></em><em><u>[log 2 - 1] = 0.3010,[since log 10=1].</u></em>

<em><u>x[-0.699] = 0.3010.</u></em>

<em><u>x</u></em><em><u>=</u></em><em><u> </u></em><em><u>0.3010/-0.699.</u></em>

<em><u>x</u></em><em><u>=</u></em><em><u> </u></em><em><u>= -0.4306….</u></em>

<em><u>x</u></em><em><u>=</u></em><em><u> </u></em><em><u>= -0.4</u></em><em><u>.</u></em>

7 0
2 years ago
Read 2 more answers
Hi what is the answer
Alik [6]

Answer:

a) pyramid / prism

b)cuboid / rectangle

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
What does f(x) = 3x - 1, for f(-2) mean?
Andrews [41]

Answer:

It mean that the x is now replace with -2 in the whole equation

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Find the solution of this system of equations.
solmaris [256]
X=5+y

Substitute the value of x in second equation
28x – 9y= -12
28 (5+y)-9y =-12
140 +28y -9y =-12
140 +19y= -12
19y = - 152
y= -8



Now let's find the value of x using y

x= 5+y
x= 5 + (-8)
= -3

So,
x= -3
y=-8
3 0
4 years ago
Ahhhh sorry another oneeee<br> im so dumb uwu
sergiy2304 [10]
Let's solve this problem step-by-step.

STEP-BY-STEP EXPLANATION:

Let's first establish that the origin is always ( 0, 0 ).

Next, as shown in the diagram attached, we can establish that there is a right-angle triangle formed when we connect the different points given from the problem. We can use this to solve the problem.

As the shape is a right-angle triangle, we can use Pythagoras' Theorem which is as follows:

a^2 + b^2 = c^2

Where c = hypotenuse of the right-angle triangle

Where a and b = other two sides of the right-angle triangle which aren't the hypotenuse

From this, we will substitute the values from the problem into Pythagoras' Theorem.

a^2 + b^2 = c^2

a = 12

b = 5

c = distance from the origin = d

THEREFORE:

( 12 )^2 + ( 5 )^2 = d^2

d^2 = 12^2 + 5^2

d^2 = 144 + 25

d^2 = 169

d = square root of ( 169 )

d = 13

FINAL ANSWER:

Therefore, the point ( 12, 5 ) is 13 units from the origin.

Hope this helps! :)
Have a lovely day! <3

3 0
3 years ago
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