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3 years ago

Doris says 0 is not a rational number is she correct?

2 answers:

7 0

As far as I know 0 IS a rational number. The only ones that are not rational are negative numbers. :) Though I could be wrong.....

ivolga24 [154]3 years ago

4 0

0 is a rational number because it can be written as a ratio. So Doris is incorrect.

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a meal cost 32.75 and another meal cost 39.88 a person pays for bothe meals and leaves a 14% tip whats the total cost

kramer

Answer:

if a person pays for both meal then

32.75+39.88

=159.75

noww

14%of 159.75

(14/100)x159.75

=22.36$

noww total cost

=159.75+22.36

=182.115$

3 0

3 years ago

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[3]<br>(b)<br>Calculate the values of c for which 2x2 – 3x + c>-2 for all values of x.

hoa [83]

Answer:

c > -7/8

Step-by-step explanation:

Add 2 for an inequality that compares to zero:

2x^2 -3x +(c+2) > 0

This will be true when the discriminant is negative. For the quadratic ...

ax^2 +bx +c

the discriminant is ...

b^ -4ac

We want this to be negative:

(-3)^2 -4(2)(c+2) < 0

9 -8(c +2) < 0

9 -8c -16 < 0

-7 < 8c

-7/8 < c

The given inequality will be true for all values of c greater than -7/8.

3 0

3 years ago

QUESTION 1 Evaluate −30 ÷ −6. a 5 b −5 c 6 d −6 QUESTION 2 Evaluate 62 ÷ (3 + 9). a3 b4 c12 d21 QUESTION 3 Danny made a mistake

Mashcka [7]

Answer:

A; ?; Line 3

Step-by-step explanation:

Question 1:

-30 divided by -6 is 5.

The negatives cancel each other out.

And 30 divided by 6 is simply 5.

Question 2:

$62\div(3+9)$

Do the operation inside the parenthesis first:

$62\div12$

Divide. 12 does not go into 62 evenly. 12 times 5 is 60, so the answer is 5 remainder 2:

$62\div12=5\text { R}2$

Or in fractions:

$31/6$

(Was there a typo? From what you've given me, the correct answer is not listed.)

Question 3:

So we have to following steps:

$\text{Line 1: } 21+35\div7+6(2)\\\text{Line 2: }21+5+6(2)\\\text{Line 3: }21+11(2)\\\text{Line 4: }21+22\\\text{Line 5: }43$

The mistake is in Line 3. Danny cannot just combine 5+6(2) into 11(2). Instead, he should multiply 6(2) and then add. Thus, the correct solution is:

$\text{Line 1: } 21+35\div7+6(2)\\\text{Line 2: }21+5+6(2)\\\text{Line 3: }21+5+12\\\text{Line 4: }26+12\\\text{Line 5: }38$

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3 years ago

I need this ASAP PLSS help

Andreyy89

Answer:

I think d.) 1

Step-by-step explanation:

1/2 and 3/4 is a 1/4 difference bc 1/2= 2/4

3/4 + 1/4 is a cup. I may be wrong

3 0

3 years ago

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Easy math! 7th / 20 points

bulgar [2K]

Answer:

Step-by-step explanation:

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3 years ago

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