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lilavasa [31]
3 years ago
8

What number would you add to both sides of x2 + 7x = 4 to complete the square? o 22

Mathematics
1 answer:
Vika [28.1K]3 years ago
4 0

Answer:

49/4

Step-by-step explanation:

x^2 + 7x = 4

Take the coefficient of x

7

Divide by 2

7/2

Square it

(7/2) ^2 = 49/4

Add this to each side

x^2 + 7x  +49/4= 4+49/4

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Dmitriy789 [7]

Answer:

<em>Volume</em><em> </em><em>of</em><em> </em><em>cylinder</em><em> </em><em>is</em><em> </em>

<em>\pi {r}^{2} h</em>

22/7 × 16 ×11

= 553.14 cubic centimeters.

7 0
2 years ago
20 points and brainliest answer for correct answer. Photo above. Due by 9:45 today! Hi
SSSSS [86.1K]

Answer:

146 square meters

Step-by-step explanation:

We can split the figure into a 6 by 15 rectangle and a parallelogram (8 base, 7 height).

  1. The area of the rectangle is 6•15=90
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7 0
2 years ago
Help me please. Find the measures of CAD and DAE
VladimirAG [237]

well, we know the "sum" of both angles is 90°, notice the rectangle in the corner, so we can say that the angles are simply complementary angles, thus

\left( \cfrac{3}{2}x+20 \right)+2x=90\implies \stackrel{\textit{multiplying both sides by }\stackrel{LCD}{2}}{2\left( \cfrac{3}{2}x+20 + 2x \right)=2(90)} \\\\\\ 3x+40+4x=180\implies 7x+40=180\implies 7x=140\implies x=\cfrac{140}{7} \\\\\\ x = 20~\hfill \stackrel{\measuredangle CAD}{\cfrac{3}{2}20+20\implies 50}\qquad\qquad \stackrel{\measuredangle DAE}{2(20)\implies 40}

8 0
2 years ago
A railroad crew can lay 5 miles of track each day. They need to lay 140 miles of track. The length, L (in miles), that is left t
abruzzese [7]

Answer:

4

Step-by-step explanation:

8 0
2 years ago
Algebra 1 unit 4 mid quiz
nataly862011 [7]
Answer. Option A. y>3x+2
Explanation. Because the line is dotted, we know it is a > equation. We know that in slope-intercept form, the mx stands for is the slope (rise over run), by looking at the graph, we find that the slope is in fact 3 (or 3/1). For the second part of the equation, we know it’s the y-intercept; therefore, option A is correct because the y-intercept is in fact 2. Hope this helps, let me know if it’s correct so others can use it :)
Good luck.
8 0
3 years ago
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