1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
scZoUnD [109]
4 years ago
9

10 + 10 + 10 is equal to 30 40 50 1

Mathematics
1 answer:
vladimir1956 [14]4 years ago
6 0

Answer:

30

Step-by-step explanation:

10 + 10 = 20 + 10 = 30

Another way is 10 • 3 = 30

You might be interested in
PLS NEED HELP WITH 3 AND 4
Rainbow [258]

Answer:

the first one is 62 and the second one

Step-by-step explanation:

i dont know the second one

3 0
3 years ago
Find the product.<br><br> 28.5 x 7<br><br> A. 198.5<br> B. 199<br> C. 199.5<br> D. 200
aev [14]

Answer:

199.5

Step-by-step explanation:

i know because I added it up

5 0
3 years ago
Read 2 more answers
Find the surface area of a square pyramid with side length 5 ft and slant height 7 ft.
harina [27]

Answer:

99.33ft^2

Step-by-step explanation:

The surface area of a square pyramid is expressed as;

TSA = a²+2a√a²/4 + h²

Given that

a = 5ft

h = 7ft

Substitute

TSA = 5²+2(5)√5²/4 + 7²

TSA = 25+10√25/4 + 49

TSA = 25 + 10√(221/4)

TSA = 25 + 10(√55.25)

TSA = 25 + 10(7.433)

TSA = 25 +  74.33

TSA = 99.33ft^2

Hence the surface area of a square pyramid with side length 5 ft and slant height 7 ft is 99.33ft^2

3 0
3 years ago
Read 2 more answers
How do you find your answer step-by-step?
WARRIOR [948]
5.68 x 6.02 ( 10^9)


same base 10 so add the exponent together

4 0
3 years ago
Can someone please explain how to do this!!!
DedPeter [7]

Hi there!

So we are given that:-

  • tan theta = 7/24 and is on the third Quadrant.

In the third Quadrant or Quadrant III, sine and cosine both are negative, which makes tangent positive.

Since we want to find the value of cos theta. cos must be less than 0 or in negative.

To find cos theta, we can either use the trigonometric identity or Pythagorean Theorem. Here, I will demonstrate two ways to find cos.

<u>U</u><u>s</u><u>i</u><u>n</u><u>g</u><u> </u><u>t</u><u>h</u><u>e</u><u> </u><u>I</u><u>d</u><u>e</u><u>n</u><u>t</u><u>i</u><u>t</u><u>y</u>

\large \displaystyle{ {tan}^{2}  \theta + 1 =  {sec}^{2}  \theta}

Substitute tan theta = 7/24 in.

\large \displaystyle{ {(  \frac{7}{24}) }^{2}  + 1 =  {sec}^{2} \theta }

Evaluate.

\large \displaystyle{ \frac{49}{576}  + 1 =  {sec}^{2}  \theta} \\  \large \displaystyle{ \frac{625}{576}  =  {sec}^{2}  \theta}

Reminder -:

\large \displaystyle{ sec \theta =  \frac{1}{cos \theta} }

Hence,

\large \displaystyle{ \frac{576}{625}  =  {cos}^{2}  \theta} \\  \large \displaystyle{ \sqrt{ \frac{576}{625} }  = cos  \theta} \\  \large \displaystyle{ \frac{24}{25}  = cos \theta}

Because in QIII, cos<0. Hence,

\large \displaystyle \boxed{ \blue{cos \theta =  -  \frac{24}{25} }}

<u>U</u><u>s</u><u>i</u><u>n</u><u>g</u><u> </u><u>t</u><u>h</u><u>e</u><u> </u><u>P</u><u>y</u><u>t</u><u>h</u><u>a</u><u>g</u><u>o</u><u>r</u><u>e</u><u>a</u><u>n</u><u> </u><u>T</u><u>h</u><u>e</u><u>o</u><u>r</u><u>e</u><u>m</u>

\large \displaystyle{ {a}^{2}  +  {b}^{2}  =  {c}^{2} }

Define c as our hypotenuse while a or b can be adjacent or opposite.

Because tan theta = opposite/adjacent. Therefore:-

\large \displaystyle{ {7}^{2}  +  {24}^{2}  =  {c}^{2} } \\  \large \displaystyle{49 + 576 =  {c}^{2} } \\  \large \displaystyle{625 =  {c}^{2} } \\  \large \displaystyle{25 = c}

Thus, the hypotenuse side is 25. Using the cosine ratio:-

\large \displaystyle{cos \theta =  \frac{adjacent}{hypotenuse}}

Therefore:-

\large \displaystyle{cos \theta =  \frac{24}{25} }

Because cos<0 in Q3.

\large \displaystyle \boxed{ \red{cos \theta =  -  \frac{24}{25} }}

Hence, the value of cos theta is -24/25.

Let me know if you have any questions!

8 0
3 years ago
Other questions:
  • 5.11+6.9-15.3+ wat number=20
    7·1 answer
  • In a recent survey of 974 voters, 724 indicated that they were in favor of a new city park, while the other 250 voters said that
    9·1 answer
  • Please help and please show work<br>will give brainlyist
    8·2 answers
  • Write a function rule for the statement, "the output is 4 less than the input." Then complete the table.
    15·1 answer
  • Help please! Will give brainliest, thank, and rate!
    9·1 answer
  • Estimate the quotient. 6 2/5 ÷ 2 6/7 ? A) 2 B) 4 C) 5 D) 3 and please explain it . ty
    9·1 answer
  • 1. Sam went for a ride on a sailboat. the ride lasted 3/4 hours'
    8·1 answer
  • How do you know if you are correct in math?
    9·1 answer
  • Please help Evaluate.
    5·1 answer
  • TODAY ONLY: Towels are 30% off at the Towel Emporium. If our total before discount was $99.30, what is the price we will pay?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!