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2 years ago

Which equation shows the quadratic formula used correctly to solve 5x^2+3-4=0 for x

Mathematics

1 answer:

Neko [114]2 years ago

3 0

Answer:

the first one is correct

Step-by-step explanation:

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In a contest to guess the number of jelly beans in a jar, Alice guessed 25;Betty, 18;Clare,23;Dotty,19;Edith,24;and Fran,17. Two

vampirchik [111]

Answer:

<em>There are 21 jelly beans in the jar.</em>

Step-by-step explanation:

Suppose, the number of jelly beans in the jar is $x$

Two were off by 2, two were off by 3, two were off by 4. That means, the six guessed number will be: $(x+2), (x-2), (x+3), (x-3), (x+4), (x-4)$

Given that, Alice guessed 25; Betty, 18; Clare, 23; Dotty, 19; Edith, 24; and Fran, 17.

So, the sum of all six guessed number will be: $25+18+23+19+24+17=126$

Thus, the equation will be..........

$(x+2)+(x-2)+(x+3)+(x-3)+(x+4)+(x-4)= 126\\ \\ 6x= 126\\ \\ x=\frac{126}{6}=21$

So, the number of jelly beans in the jar is 21.

5 0

2 years ago

1/3 X 12 = 12 X ___ = __

valkas [14]

1/3=4 hop this help you

8 0

2 years ago

What’s the number for 2+1=

Cerrena [4.2K]

2+2 is 4 minus one that's 3 quick maths but 2+1 is equal to 3

8 0

2 years ago

1 point

denis23 [38]

Answer:

128cm

Step-by-step explanation:

since there are 4 triangles that have an area of 8*4 each, you can multiply 8*4 together to get 32. Then you would multiply 32 by 4 to get the entire area of the whole figure.

8 0

2 years ago

Questions:

ryzh [129]

Answer:

50 into celsius is 10

45 into fahrenheit is 113

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers