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4 years ago

Question is in the picture

Mathematics

1 answer:

Firdavs [7]4 years ago

4 0

Answer:

Step-by-step explanation:

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In a recent year, there was about 400,000,000 mobile internet users. ( look at the picture )

AVprozaik [17]

$\bf 400,000,000\implies 4\times 10^8 \\\\[-0.35em] ~\dotfill\\\\ \cfrac{\textit{desktop users}}{\textit{mobile users}}\qquad \qquad \cfrac{1.2\times 10^9}{4\times 10^8}\implies \cfrac{12\times 10^8}{4\times 10^8}\implies \cfrac{12}{4}\times\cfrac{10^8}{10^8}\implies \cfrac{3}{1}$

3 : 1, or 3 to 1, thus 3 times as many.

7 0

3 years ago

Read 2 more answers

To prepare for a triathlon, Amanda starts from position A and rides her bike along a straight road for 12 miles to reach positio

Sergio [31]

Answer:

Step-by-step explanation:

Let's draw the given information first for better understanding . Check the image attached.

We can use cosine rule to find the angles .

for angle A ,

$Cos A =\frac{b^2+c^2-a^2}{2bc}$

$Cos A =\frac{20^2+12^2-15^2}{2*20*12}$

$Cos A =\frac{319}{480}$

m∠A = 48.35 degrees

Similarly for angle B

$Cos B =\frac{a^2+c^2-b^2}{2bc}$

$Cos B =\frac{15^2+12^2-20^2}{2*15*12}$

$Cos B =\frac{-31}{360}$

m∠B = 94.94 degrees

Now use A+B+C=180 degrees

48.35+94.94+C=180

C=180-48.35-94.94

m∠C = 36.71 degrees

3 0

4 years ago

Read 2 more answers

I NEED HELP ASAP Please

Marat540 [252]

Where i put the black lines is where the points should be because there are 5 lines and the 6th one makes a whole number you would multiply 2/3 but 2 and it’ll become 4/6 and that’s why i got it on -1 4/6 and then 5/6 well i have it on there

5 0

3 years ago

Please awnserrrrrrr quicklyyyyy

jeyben [28]

Pls give this a 5 star rating lol

4 0

3 years ago

Question 11 options:

9966 [12]

Answer:

x = 12

length = 4 cm

width = 20 cm

Step-by-step explanation:

a = lw

Plug in the givens

80 = (x - 8)(x + 8)

Multiply

80 = x^2 - 64

Add 64 to both sides

144 = x^2

Take the square root of both sides

x = ±12

(The negative root is extraneous since the dimensions can not be negative)

x = 12

length = x - 8 = 4 cm

width = x + 8 = 20 cm

7 0

2 years ago