3 years ago

Round 78,879 to the nearest ten

Mathematics

2 answers:

yan [13]3 years ago

7 0

Answer:

78,880

Step-by-step explanation:

Add one to 7 and make the 9 behind it 0

Inessa [10]3 years ago

4 0

The answer is 78,880

You might be interested in

Describing the Vertical Line Test Explain what the vertical line test is and how it is used.

Radda [10]

Answer:

Vertical line test is used to identify that the given graph is function or not

In this a vertical line is drawn at any part of the graph

If it cuts only one line then it is a function and it cuts more than one line then it is not a function

3 0

3 years ago

Read 2 more answers

A scientist is studying certain germs. She places 3 germs in a special solution that will help the germs grow. The number of ger

vivado [14]

3*2 is 6 6*2 is 12 12*2 is 24 24*2 is 48 48*2 is 96 96*2 is 192 and 192*2 is 384

7 0

3 years ago

A triangular plot of land has the dimensions shown in the diagram.what is the area of the land PLEASE ANSWER TODAY

Ghella [55]

(20*30)/2 = 300

300 km is the area of the triangle

5 0

3 years ago

Read 2 more answers

2x-32=12 means they spent how much

Hoochie [10]

Answer:

Step-by-step explanation:

6 0

2 years ago

Root 3 cosec140° - sec140°=4 prove that

Lorico [155]

Answer:

Step-by-step explanation:

We are to show that $\sqrt{3} cosec140^{0} - sec140^{0} = 4\\$

Proof:

From trigonometry identity;

$cosec \theta = \frac{1}{sin\theta} \\sec\theta = \frac{1}{cos\theta}$

$\sqrt{3} cosec140^{0} - sec140^{0} \\= \frac{\sqrt{3} }{sin140} - \frac{1}{cos140} \\= \frac{\sqrt{3}cos140-sin140 }{sin140cos140} \\$

From trigonometry, 2sinAcosA = Sin2A

$= \frac{\sqrt{3}cos140-sin140 }{sin140cos140} \\\\= \frac{\sqrt{3}cos140-sin140 }{sin280/2}\\= \frac{4(\sqrt{3}/2cos140-1/2sin140) }{2sin280}\\\\= \frac{4(\sqrt{3}/2cos140-1/2sin140) }{sin280}\\since sin420 = \sqrt{3}/2 \ and \ cos420 = 1/2 \\ then\\\frac{4(sin420cos140-cos420sin140) }{sin280}$

Also note that sin(B-C) = sinBcosC - cosBsinC

sin420cos140 - cos420sin140 = sin(420-140)

The resulting equation becomes;

$\frac{4(sin(420-140)) }{sin280}$

= $\frac{4sin280}{sin280}\\ = 4 \ Proved!$

3 0

3 years ago