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4 years ago

Please answer correctly !!!!!!!!!! Will Mark brainliest !!!!!!!!!!!!

Mathematics

1 answer:

nydimaria [60]4 years ago

3 0

Answer:

Step-by-step explanation:

The discriminant is what's under the square root sign in the quadratic equation. The equation for the discriminant is $b^{2}-4ac$ , where b is the coefficient of x, a is the coefficient of $x^{2}$ , and c is the number with no variable attatched to it. If we plug in the numbers ( $17^{2} -4*4*3$ ) it gives you 241, which is the discriminant. Since 241 is more than zero, it has 2 zeros. If the discriminant was 0, there'd be 1 zero, and less then zero there would be zero zeros.

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one hundred forty countries participated in the 1984 summer olympics in los angeles. this was 75% more than the number of countr

Cloud [144]

Answer:

80 countries participated in the 1980 olympics in Moscow.

Step-by-step explanation:

Hello, I think I can help you with this

You can solve this by using a simple rule of three

Step 1

define

140 countries participated in 1984,this was 75% more than the last time,this means that 140 is the 175% of a value that we need to know

140 ⇔175%

x? ⇔100%

the relation is

$\frac{140}{175}=\frac{x}{100}$

Step 2

solve for x

$\frac{140}{175}=\frac{x}{100}\\x=\frac{100*140}{175}\\x=\frac{14000}{175} \\x=80$

80 countries participated in the 1980 olympics in Moscow.

Have a nice day

6 0

3 years ago

–(5 + (–11.3)) + (–4.3)

yuradex [85]

Well u have to do whats in the parenthesis first so -(5+(-11.3 equals -16.3 then u add (-4.3) so -16.3+ (-4.3) = -20.6

6 0

3 years ago

The resting heart rates for 80 women aged 46–55 in a simple random sample are normally distributed, with a mean of 71 beats per

salantis [7]

ME = 1.10.

Explanation:
The margin of error, ME, is given by the formula z*(σ/√n).

Since we want a 90% confidence interval, z=1.645.

σ=6, and n=80, giving us ME=1.645*(6/√80). This comes out to 1.10.

7 0

3 years ago

Read 2 more answers

Can somebody plz answer these questions correctly thanks!!

nadya68 [22]

Answer:

The decimal form of 3/5 is .6 or .60 and the percent form is 60%.

The fraction form of 0.3 is 30/100 or 3/10 and the percent form is 30%.

The decimal form of 3/20 is .15 and the percent form is 15%.

The fraction form of 0.58 is 58/100 or 29/50 and the percent form is 58%.

The decimal form of 19/50 is .38 and the percent form is 38%

4 0

3 years ago

Two consecutive numbers have a sum of 107. What is the larger of the two numbers?

Vladimir [108]

Answer:

Step-by-step explanation:

54 + 53 = 107

7 0

2 years ago