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Lubov Fominskaja [6]
4 years ago
5

For what values of x does -x2 +7x + 5 = 0?

Mathematics
2 answers:
uranmaximum [27]4 years ago
5 0
Use the commutative property-to record the terms

VMariaS [17]4 years ago
3 0

Answer:

Step-by-step explanation:

-2x + 7x + 5 = 0

-2x +7x = 5

5x = 5

divide both side by 5

5x/5 = 5/5

x = 1

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Plzzzz I need Helpppp!!!​
Bumek [7]

Answer:

(8x+15)=(7x+17){ being alternative angle}

8x+15=7x+17

8x-7x=17-15

x=2

here,

8x+15= 8×2+15

16+15=31

7x+17

7×2+17

14+17

31

again

(8x+15)+y=180°( being straight angle)

31+y=180

y=180-31

y= 149

7 0
3 years ago
Read 2 more answers
Raymond is installing a new kitchen counter top . The counter top is a rectangular piece of quartz that is 5.75 feet long and 2.
Naddika [18.5K]

Answer:

Length of 6 feet

Width of 2 feet

The estimate of the perimeter of the countertop is 16 feet.

Step-by-step explanation:

Rectangle:

A rectangle has two dimensions: The length(l) and the width(w). The perimeter of a rectange is:

P = 2(l + w).

In this question:

Length: 5.75 feet

Width: 2.47 feet.

Round the length and width to the nearest whole number .

5.75 is closer to 6(0.25) than to 5(0.75). So the length is 6 feet.

2.47 is closer to 2(0.47) than to 3(0.53). So the width is 2 feet.

Then estimate the perimeter of the countertop

P = 2(l + w) = 2(6 + 2) = 16

The estimate of the perimeter of the countertop is 16 feet.

4 0
3 years ago
Find the area of an octagon with a radius of 6 meters
never [62]

A regular octagon has all its eight sides congruent. The line segments joining each of the vertices of a regular octagon to its center are called the radii of the octagon. These 8 radii divide a regular octagon into 8 congruent isosceles triangles. Area of each isosceles triangle is

A_{triangle}=\dfrac{1}{2}a^2\sin \alpha,

where a is length of the side of the octagon and \alpha is the angle between two radii of the octagon.

In regular octagon

\alpha=\dfrac{360^{\circ}}{8}=45^{\circ}.

Then the area of regular octagon is

A_{octagon}=8A_{triangle}=8\cdot \dfrac{1}{2}a^2\sin \alpha=4\cdot (6)^2\cdot \sin 45^{\circ}=4\cdot 36\cdot \dfrac{\sqrt{2}}{2}=72\sqrt{2} sq. m.

Answer: A_{octagon}=72\sqrt{2} sq. m.


7 0
4 years ago
A bill for Rs 3235 was drawn on Feb. 3, 1998 at 6 months and discounted on March 3, 1998 at 8 % p.a. Find the value of the bill
Fantom [35]

Answer:

RS 3127.166

RS 107.834

Step-by-step explanation:

6 month bill :

Drawn date = Feb, 3

Discounted date = March 3,

Difference = 1 month

6 month - 1 month = 5 months = 5 * 30 = 150 days

Value of the bill :

P(1 - rate * time)

3235(1 - 0.08 * 150/360)

3235(1 - 0.08 * 0.4166666)

3235(1 - 0.0333333)

3235(0.9666666)

= Rs3127.1666

Value of bill = 3127.166

Bankers gain = 3235 - 3127.166 = 107.834

6 0
3 years ago
I need help ASAP...<br><br> (reward 10 points)
marta [7]

Answer:

it may be C im sorry if its wrong

Step-by-step explanation:

please mark me the brainiest

6 0
3 years ago
Read 2 more answers
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