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
quester [9]
2 years ago
9

HELP 100 POINTS PLEASE GET IT RIGHT

Mathematics
2 answers:
Nat2105 [25]2 years ago
5 0

Answer:

Step-by-step explanation:

1) (2x^{2} - 9x + 4) + (3x^{2} + 2x - 3)

= 2x^{2} - 9x + 4 + 3x^{2} + 2x - 3

= 5x^{2} - 7x - 1

2) x^{2} - 4x - 3 + x^{2} -2x - 3

= 2x^{2} - 6x - 6

astra-53 [7]2 years ago
4 0

Answer:

1.) 5x^{2} -7x+1

2.)2(x^{2} -3x-3

Step-by-step explanation:

You might be interested in
Leon got a reduction of $40 on a Geometry set
SSSSS [86.1K]
I pretty sure this one is b
6 0
3 years ago
Read 2 more answers
Find the value of x in each case: Given: Iso. ΔABC, HM ∥DG Find: x, m∠CAB, m∠CBA
AleksAgata [21]

1. Start with ΔCIJ.

  • ∠HIC and ∠CIJ are supplementary, then m∠CIJ=180°-7x;
  • the sum of the measures of all interior angles in ΔCIJ is 180°, then m∠CJI=180°-m∠JCI-m∠CIJ=180°-25°-(180°-7x)=7x-25°;
  • ∠CJI and ∠KJA are congruent as vertical angles, then m∠KJA =m∠CJI=7x-25°.

2. Lines HM and DG are parallel, then ∠KJA and ∠JAB are consecutive interior angles, then m∠KJA+m∠JAB=180°. So

m∠JAB=180°-m∠KJA=180°-(7x-25°)=205°-7x.

3. Consider ΔCKL.

  • ∠LFG and ∠CLM are corresponding angles, then m∠LFG=m∠CLM=8x;
  • ∠CLM and ∠CLK are supplementary, then m∠CLM+m∠CLK=180°, m∠CLK=180°-8x;
  • the sum of the measures of all interior angles in ΔCLK is 180°, then m∠CKL=180°-m∠CLK-m∠LCK=180°-(180°-8x)-42°=8x-42°;
  • ∠CKL and ∠JKB are congruent as vertical angles, then m∠JKB =m∠CKL=8x-42°.

4. Lines HM and DG are parallel, then ∠JKB and ∠KBA are consecutive interior angles, then m∠JKB+m∠KBA=180°. So

m∠KBA=180°-m∠JKB=180°-(8x-42°)=222°-8x.

5. ΔABC is isosceles, then angles adjacent to the base are congruent:

m∠KBA=m∠JAB → 222°-8x=205°-7x,

7x-8x=205°-222°,

-x=-17°,

x=17°.

Then m∠CAB=m∠CBA=205°-7x=86°.

Answer: 86°.

3 0
3 years ago
Read 2 more answers
the sides of the rectangle are inreased by a scale factor of 4. The perimeter of the smaller retangle is 20 cm. What is the peri
Vedmedyk [2.9K]
The height of the smaller rectangle, let us say is 5
5 x 4 = 20
(multiply height of rectangle to scale factor)
the length is 4
4 x 4 = 16
(multiply length of rectangle to scale factor)

to find larger factor, divide smaller with larger
16/20 = 1/4

scale factor should be 1/4

multiply 20 with 4

perimeter of larger should be 80

hope this helps

6 0
3 years ago
kelly ran 2 miles and burned 240 calories.The next day she ran 3 miles and burnd 360 calories. The next day 4 miles and 480 calo
s2008m [1.1K]

Answer:

960

Step-by-step explanation:

the ratio is 1:120

so 8 * 120 = 960

hope this helps please make brainliest :)

5 0
3 years ago
<img src="https://tex.z-dn.net/?f=4%2C%5Cpi%20%2C8" id="TexFormula1" title="4,\pi ,8" alt="4,\pi ,8" align="absmiddle" class="la
ivolga24 [154]

Answer:

\pi \: 4 \: 8

5 0
2 years ago
Read 2 more answers
Other questions:
  • Pears cost $0.92 per pound and apples cost $1.10 per pound. Mr. Bonilla bought 3.75 pound of pears and 2.1 pounds of apples. How
    5·2 answers
  • Someone help me do this question step by step please? ASAP
    15·1 answer
  • What is the measure of <br> A. Cannot be determined <br> B. 74<br> C. 16<br> D. 32
    11·1 answer
  • 3 X 5 power or 2
    6·1 answer
  • Ron's factory is currently producing 30 chairs in a day. how many chairs will be produced if production is to be increased by 13
    15·2 answers
  • A 12 foot board is split into 5 equal pieces. Which expression shows the length of each piece
    15·1 answer
  • Investors buy a studio apartment for $200,000. Of this amount, they have a down payment of $60,000. Their down payment is what p
    8·1 answer
  • Solve for y from the standard form<br> 3x - 8y = 24
    15·2 answers
  • If f(x)=3/x-3, what is (f•f)(x)?
    13·1 answer
  • Kimberly has $120 to spend at the bookstore. Kimberly buys a hardcover book for $36, as well as some gift cards for her family a
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!