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2 years ago

Pls help solve this……

Mathematics

2 answers:

melomori [17]2 years ago

6 0

The first one is the right option have a good day :)

creativ13 [48]2 years ago

3 0

Answer:

(a) x = -7, 1

Step-by-step explanation:

In most cases, it is useful to follow the directions. This can be solved easily by completing the square.

<h3>Completing the square</h3>

The square is completed by adding the square of the x-term coefficient to both sides.

x² +6x +9 = 7 +9 . . . . . add 9

(x +3)² = 16 . . . . . . . . simplify . . . . write the left side as a square

The square is now complete. We finish the solution by taking the square root.

x +3 = ±√16 = ±4 . . . . take the square root

x = -3 ±4 . . . . . . . . . subtract 3

x = -7, 1

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What is the solution to the system of equations below?<br><br> x + y = 7 and x + 2 y = 11

xxTIMURxx [149]

Answer:

x=3, y=4. (3, 4).

Step-by-step explanation:

x+y=7

x+2y=11

--------------

-x-y=-7

x+2y=11

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y=4

x+4=7

x=7-4

x=3

5 0

2 years ago

What is the vertex form of this and how do you graph this

luda_lava [24]

set it up like a y= equation.

which would be y=-x^2+7

to find the vertex, you substitute the 0s.

so 0=-(0)^2+7

-0^2=0

0+7=7

0=7

(0,7)

6 0

4 years ago

1_9,644=100,000 to the nearest ten thousand

laiz [17]

119,644 is the answer I believe

7 0

4 years ago

Put these in order from least to greatest <br> 2.17x10^-2, 4.18x10^-4, 3.26x10^-3

MaRussiya [10]

Answer:

Step-by-step explanation:

2.17 * 10-2 = 2.17 * 1/(10^2) = 2.17 / 100 = 0.0217

4.18 * 10^-4 = 4.18 * 1 / (10^4) = 4.18 / 10000 = 0.000418

3.26 x 10^-3 = 3.16 * 1 / (10^3) = 3.16 / 1000 = 0.00316

least to greatest is :

(1) 4.18 * 10^-4

(2) 3.26 * 10^-3

(3) 2.17 * 10^-2

3 0

3 years ago

Read 2 more answers

if I set off for the market,a distance of 11km at 10am. And walk at an average speed of 3km per hour,At what time will I reach t

earnstyle [38]

Answer:

At 1:40 pm you will reach the market.

Step-by-step explanation:

Distance (d) = 11 km

Average speed (v) = 3 km/h

Formula:

$\rm Average \: speed = \dfrac{Distance}{Time} \\ \\ \rm 3 = \dfrac{11}{t} \\ \\ \rm t = \dfrac{11}{3} \\ \\ \rm t = 3 \frac{2}{3} \\ \\ \rm t = 3 hr \: 40min$

It will take 3 hours 40 minutes to reach the market.

So, if you set off for the market at 10 am you will reach market by 1:40 pm (10 am + 3hr 40min).

7 0

2 years ago