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
Luda [366]
3 years ago
9

5. Simpliify. 5.3(-a-2.4b) - 0.4(2a - 0.5b)

Mathematics
1 answer:
Shalnov [3]3 years ago
6 0

Answer:

-5.3a - 12.72b - 8a² + 2ab

You might be interested in
What is the factored form of the polynomial?
DENIUS [597]

Answer:

C.  (x + 4)(x + 5).

Step-by-step explanation:

We need 2 numbers whose product is + 20 and whose sum is + 9.

They are + 5 and + 4 , so

x2 + 9x +20

= (x + 4)(x + 5).

5 0
4 years ago
Can you please help me with number 21 please
yKpoI14uk [10]

Answer:

well it simply tells you if you think your right on all of them then press yes if not press no

8 0
3 years ago
Find the circumference of the circle. Then, find the length of each bolded arc. Use appropriate notation
Vaselesa [24]

Answer:

\text{1) }\\\text{Circumference: }24\pi \text{ m}},\\\text{Length of bolded arc: }18\pi \text{ m}\\\\\text{3)}\\\text{Circumference. }4\pi \text{ mi},\\\text{Length of bolded arc: }  \frac{3\pi}{2}\text{ mi}

Step-by-step explanation:

The circumference of a circle with radius r is given by C=2\pi r. The length of an arc is makes up part of this circumference, and is directly proportion to the central angle of the arc. Since there are 360 degrees in a circle, the length of an arc with central angle \theta^{\circ} is equal to 2\pi r\cdot \frac{\theta}{360}.

Formulas at a glance:

  • Circumference of a circle with radius r: C=2\pi r
  • Length of an arc with central angle \theta^{\circ}: \ell_{arc}=2\pi r\cdot \frac{\theta}{360}

<u>Question 1:</u>

The radius of the circle is 12 m. Therefore, the circumference is:

C=2\pi r,\\C=2(\pi)(12)=\boxed{24\pi\text{ m}}

The measure of the central angle of the bolded arc is 270 degrees. Therefore, the measure of the bolded arc is equal to:

\ell_{arc}=24\pi \cdot \frac{270}{360},\\\\\ell_{arc}=24\pi \cdot \frac{3}{4},\\\\\ell_{arc}=\boxed{18\pi\text{ m}}

<u>Question 2:</u>

In the circle shown, the radius is marked as 2 miles. Substituting r=2 into our circumference formula, we get:

C=2(\pi)(2),\\C=\boxed{4\pi\text{ mi}}

The measure of the central angle of the bolded arc is 135 degrees. Its length must then be:

\ell_{arc}=4\pi \cdot \frac{135}{360},\\\ell_{arc}=1.5\pi=\boxed{\frac{3\pi}{2}\text{ mi}}

8 0
3 years ago
Drag and drop the words below to correctly complete the statement of the SAS Similarity Theorem.
Olegator [25]
Congruent
An angle
Sides
Proportional
Similar
5 0
3 years ago
If anyone could help that would be great. Ty. 1) y=-81-4 4 12​
Rainbow [258]

Answer:

j

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • How to solve x, for both questions please?
    8·1 answer
  • Help<br><br>solve for x and y <br><br>92 degrees<br><br>8y degrees<br><br>(6x-16) degrees
    14·1 answer
  • What error did Heather make?
    11·1 answer
  • Helene, a hiker, starts at an elevation of 27 feet above sea level and descends 32 feet during her hike to base camp. Which desc
    9·1 answer
  • Un grup de ciclistes han de fer una excursió a una casa rural que es troba a 72 quilòmetres del seu poble. El primer dia recorre
    6·1 answer
  • A cube has the dimensions 5/8 inches, 5/8 inches, 5/8 inches. what is the volume of the cube? how many smaller cubes with an edg
    8·1 answer
  • The following two triangles have the same angles, and are similar. What is the ratio of height to base for the triangles?​
    7·1 answer
  • In ΔQRS, the measure of ∠S=90°, the measure of ∠Q=31°, and RS = 27 feet. Find the length of SQ to the nearest tenth of a foot.
    11·1 answer
  • 6th work. What measure of Central tendency is calculated by adding all the values and diving the sum by the number of values
    7·1 answer
  • NO LINKS!! Please help me part 2​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!