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
svetlana [45]
3 years ago
15

Please answer 14 and 15 please!

Mathematics
1 answer:
alexandr402 [8]3 years ago
8 0

Answer: number 14 is 30.78 x 10 to the exponent of 11

Step-by-step explanation:

you multiply 8.1 and 3.8 together which would equal 30.78 and you add the exponents together since they are being multiplied.

You might be interested in
What is the slope of the line through (-3,0) and (-1,-5)?
Allisa [31]

Answer:

-5/2 (I think)

Step-by-step explanation:

went up 5 and left 2 and from (-1,-5) and since i went left it is negative

4 0
3 years ago
The square of a non-zero number is equal to 70% of the original number. What
aleksandr82 [10.1K]

Answer:

0.7.

Step-by-step explanation:

x^2 = 0.7x

x^2 - 0.7x = 0

x(x - 0.7) = 0

x = 0, 0.7.

3 0
2 years ago
Two streets intersect at a 30 degree angle. At the intersection, there are four crosswalks formed that are the same length. what
ELEN [110]

Answer:

  rhombus

Step-by-step explanation:

A quadrilateral with equal-length sides is a <em>rhombus</em>.

_____

A square is a special case of a rhombus.

3 0
3 years ago
Please and thank you. Eduardo thinks of a number between 1 and 20 that has exactly 5 factors what number is he thinking of is my
MAVERICK [17]
12 hi I got the answer
5 0
3 years ago
ANSWER ASAP ITS FOR FINALS
Roman55 [17]

Answer:

9. 66°

10. 44°

11. 2\sqrt{7}

12. 2\sqrt{3}

13. 27.3

14. 33.9

15. 22°

16. 24°

Step-by-step explanation:

9. Add 120 + 80 (equals 200) and subtract that from 360 (Because all angles in a quadrilteral add to 360°), this equals 160. Plug the same number in for both variables in the two other angle equations until the two angles add to 160. For shown work on #9, write:

120 + 80 = 200

360 - 200 = 160

12(5) + 6 = 66°

19(5) - 1 = 94°

94 + 66 = 160

10. Because the two sides are marked as congruent, the two angles are as well. This means the unlabeled angle is also 68°. The interior angles of a triangle always add to 180°, so add 68+68 (equals 136) and subtract that from 180, this equals 44. For shown work on #10, write:

68 x 2 = 136

180 - 136 = 44

11. Use the Pythagorean theorem (a² + b² = c²) (Make sure to plug in the hypotenuse for c). Solve the equation. For shown work on #10, write:

a² + b² = c²

a² + 6² = 8²

a² + 36 = 64

a² = 28

a = \sqrt{28}

a = 2\sqrt{7}

12. (Same steps as #11) Use the Pythagorean theorem (a² + b² = c²) (Make sure to plug in the hypotenuse for c). Solve the equation. For shown work on #11, write:

a² + b² = c²

a² + 2² = 4²

a² + 4 = 16

a² = 12

a = \sqrt{12}

a = 2\sqrt{3}

13. Use SOH CAH TOA and solve with a scientific calculator. For shown work on #13, write:

Sin(47°) = \frac{20}{x}

x = 27.3

14. Use SOH CAH TOA and solve with a scientific calculator. For shown work on #14, write:

Tan(62°) = \frac{x}{18}

x = 33.9

15. Use SOH CAH TOA and solve with a scientific calculator. For shown work on #15, write:

cos(θ) = 52/56

θ = cos^-1 (0.93)

θ = 22°

16. (Same steps as #15) Use SOH CAH TOA and solve with a scientific calculator. For shown work on #16, write:

sin(θ) = 4/10

θ = sin^-1 (0.4)

θ = 24°

Good luck!!

8 0
3 years ago
Other questions:
  • Find the m &lt;3 if m&lt;5=130 and m&lt;4 =70
    6·1 answer
  • PLEASE HELP ME WITH BOTH 9 AND 10!!!
    5·1 answer
  • Can someone please answer Day 20???
    8·1 answer
  • Geometry homework!!!
    9·1 answer
  • F varies jointly as g, h, and j. One set of values is f = 18, g = 4, h=3, j=5. Find f when g= 5, h=12,and j=3
    7·1 answer
  • Last year, Austin, Texas received 23.5 inches of rainfall. This year, Austin received 21.2 inches of rainfall. Find the percent
    12·1 answer
  • Solve the rational equation 5/x = 4x+1/x^2
    13·1 answer
  • Spencer and Hanna buy a pizza for $18 that is half pepperoni and half veggie. They cut the pizza into 8 slices.
    11·1 answer
  • 23/50 of Xander's friends prefer to stay home on Friday nights.What percent of Xander's friends prefer to stay home on Friday ni
    11·1 answer
  • Two of the vertices of a rectangle are plotted on the coordinate grid below.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!