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Arlecino [84]
2 years ago
7

Which expressions are equivalent to (13x+2x−53x)−(−13x+5) ?

Mathematics
1 answer:
andrew-mc [135]2 years ago
4 0

Answer:A. The first one and second B.

Step-by-step explanation:i took the test i promise!

mark me as brainiest please!

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What is the answer of question 16 <br><br> Please help me and I put you brainest
Vikentia [17]

Answer:

<em>12 m 2600 mm</em>

Step-by-step explanation:

3 m × 4 = 12 m

650 mm × 4 = 2600 mm

Hope this helps!

5 0
3 years ago
Someone help me out really quick
monitta

Answer:

Roots: 3.746 and -13.746

Vertex: (-5, 153)

Step-by-step explanation:

  • The roots of the quadratic equation y = ax² + bx + c, are the values of x at y = 0
  • Its vertex is (h, k), where, h = \frac{-b}{2a} , and k is the value of y at x = h

Let us use these facts to solve the question

∵ y = -2x² - 20x + 103

→ Compare it by the form of the equation above

∴ a = -2, b = -20, and c = 103

→ To find its roots equate y by 0

∵ 0 = -2x² - 20x + 103

→ Use your calculator to find the values of x

∴ x = 3.746427842 and x = -13.74642784

→ Round them to 3 decimal places

∴ x = 3.746 and x = -13.746

∴ Roots: 3.746 and -13.746

→ To find its vertex use the rule of h above

∵ a = -2 and b = -20

∵ h = \frac{--20}{-2(2)} = \frac{20}{-4}

∴ h = -5

→ To find k substitute y by k and x by -10 in the equation

∵ k = -2(-5)² - 20(-5) + 103

∴ k = -2(25) + 100 + 103

∴ k = -50 + 100 + 103

∴ k = 153

∴ The vertex of the quadratic is (-5, 153)

∴ Vertex: (-5, 153)

3 0
2 years ago
Please help me solve for W
mariarad [96]
W+1/9 = 5
 W = 5-1/9
 = [(5*9)-1]/9
= [45-1]/9
= 44/9
8 0
3 years ago
Read 2 more answers
What sum is represented by the following number line?
Mama L [17]

Answer:

Step-by-step explanation:

B

3 0
3 years ago
Ike Phillips worked 6.7 hours at time-and-a-half pay and 3.4
ikadub [295]

Working out the different pay rates earned by Ike Phillips :

  • Time and half pay rate = $17.055
  • Double pay rate = $22.74
  • Time and half earning = $114.2685
  • Double rate earning = $77.316
  • Gross earning = $646.3845

Let :

Regular rate = $11.37

Total earning for the week = $454.80

Double pay hours = 3.4

Time and half pay hours = 6.7

  • Time and half pay rate = 1.5 × regular pay rate = 1.5 × 11.37 = $17.055

  • Double pay rate = 2 × regular pay rate = 2 × 11.37 = $22.74

  • Time and half earning = rate × time = $17.055 × 6.7 = $114.2685

  • Double rate earning = rate × time = $22.74 × 3.4 = $77.316

  • Gross earning = (regular + time and half + double earning) = $(454.80+114.2685+77.316) = $646.3845

Therefore, Ike's gross earning for the week is $646.3845

Learn more : brainly.com/question/24635246

4 0
3 years ago
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