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Anni [7]
3 years ago
9

Find the roots of this equation 7xsquare - 5x - 2 = 0

Mathematics
1 answer:
Sophie [7]3 years ago
7 0

Answer:

x = 1, -2/7

Step-by-step explanation:

You could use the quadratic equation but this can be factored into

(7x + 2) (x - 1).  You can verify that by multiplying it out.

Since (7x + 2) (x - 1) = 0, if either factor is 0 then the equation would be equal to 0, thus we get x = 1, -2/7

You might be interested in
. In an encyclopedia of language, the author presents five sentences that make a reasonable paragraph regardless of their order.
mrs_skeptik [129]

Answer:

the 1st & last paras are fixed.

that leaves 3 to be put in any order

there are 3 choices for the 1st,

2 choices left for the 2nd

and just 1 choice for the last

multiply to get

3*2*1

= 6 ways

6 0
3 years ago
The factor tree for 1,764 is shown.
Rashid [163]

Answer:

42

Step-by-step explanation:

               |--------------1764------------|

               |                                      |

              2                           |-------882-----------|

                                           |                            |

                                          2               |--------441------|

                                                           |                      |

                                                   |------9-----|        |----49---|

                                                   |               |        |             |

                                                  3              3      7            7

From the factor tree we see that

1764 = 2^2 \times 3^3 \times 7^2

Now we need to find the square root of 1764.

\sqrt{1764} = \sqrt{2^2 \times 3^2 \times 7^2} = \sqrt{(2 \times 3 \times 7)^2} = \sqrt{(42)^2} = 42

4 0
3 years ago
Read 2 more answers
5x^4x-2 what's result ​
pashok25 [27]

Answer:

There is no result.

Step-by-step explanation:

This question does not have an answer, as you would need to plug in an x value to get any sort of answer.

3 0
3 years ago
A tank holds 1,000 gallons of syrup. Danielle filled 65 5-gallon cans with syrup. How much syrup was left in the tank when she f
Kipish [7]

Answer:

675 gallons of syrup

96 cans

Step-by-step explanation:

Capacity of tank = 1,000 gallons

Danielle filled 65 5-gallon cans with syrup.

Gallons filled = 65 × 5 gallons

= 325 gallons of syrup

Gallons left in the tank = 1,000 - 325 gallons of syrup

= 675 gallons of syrup

3 12-packs Of regular cola = 3 × 12 packs = 36 packs

4 12- packs of diet cola = 4 × 12 packs = 48 packs

2 6-packs of orange soda = 2 × 6 packs = 12 packs

Total cans = 36 + 48 + 12

= 96 cans

5 0
3 years ago
Solve this 3x - 5 = 2x +6
Vinil7 [7]

Answer:

ok so x=11

Step-by-step explanation:

5 0
4 years ago
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