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3 years ago

1.2 -(-2.5) is positive ?

Mathematics

2 answers:

vodomira [7]3 years ago

5 0

Answer: solution is 3.7 which is positive

Step-by-step explanation:

the 2 negative signs cancel each other out

DanielleElmas [232]3 years ago

5 0

No it’s is negative -1.3 but mark me brainliest.

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Ann car can go 117 miles on 3 gallons of gas. During a drive last weekend, Ann used 8 gallons of gas. How far did she drive?

Nitella [24]

Answer:

Ann drove 312 miles in 8 gallons.

Step-by-step explanation:

Distance covered by Ann's car = 117 miles

Gallons of gas spent by Ann's car to cover 117 miles = 3 gallons

Unit rate = 117 miles / 3 gallons

= 39 miles per gallon

so Ann's car can go 39 miles in one gallon of gas.

Given that Ann used 8 gallons of gas.

Therefore,

Distance covered by Ann's car in 8 gallons = 39 × 8

= 312 miles

Therefore, Ann drove 312 miles in 8 gallons.

6 0

3 years ago

Help

weeeeeb [17]

Answer:

If a polygon is convex, then the sum of the measures of the exterior angles, one at each vertex, is 360° .

Consider the sum of the measures of the exterior angles for an n -gon.

N=180n−180(n−2)

Distribute 180 .

N=180n−180n+360 =360.

Step-by-step explanation:

3 0

3 years ago

Complete the square to solve the equation below x^2-10x-1=13

Veseljchak [2.6K]

Answer:

x=5+39 squared, 5-39 squared

Step-by-step explanation:

7 0

3 years ago

How many positive integers under 50 are multiples of neither 4 nor 6

lyudmila [28]

Candidates range from 1 to 50.
50/4=12 positive integers are multiples of 4
50/6=8 positive integers are multiples of 6
50/12=4 positive integers are multiples of 12 (LCM of 4 and 6)
By the inclusion/exclusion principle, the number of multiples of either 4 or 6 is equal to 12+8-4=16.

Therefore, the complement is the number of positive integers that are multiples of neither 4 nor 6 = 50-16=34.

6 0

3 years ago

Find the distance between points 5,9 and (7,-7) using the distance formual

mart [117]

========================================
Formula to find Distance:
========================================
$\text{Distance = } \sqrt{X2-X1)^2 + (Y2-Y1)^2}$

========================================
Find Distance between (5, 9) and (7, -7):
========================================

X2 = 5, X1 = 7, Y2 = 9, Y1 = -7, therefore,

$\text{Distance = } \sqrt{(9+7)^2 + (5-7)^2}$
$\text{Distance = } \sqrt{(16)^2 + (2)^2}$
$\text{Distance = } \sqrt{256 + 4}$
$\text{Distance = } \sqrt{260}$
$\text{Distance = } 16.12 \text{ units}$

========================================
Answer: 16.12 units
========================================

5 0

3 years ago