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Dahasolnce [82]
2 years ago
13

Write an equation Eight times the sum of m and 7 is 21

Mathematics
2 answers:
guajiro [1.7K]2 years ago
6 0

Answer:

the equation would be 8(m+7)=21

Aleonysh [2.5K]2 years ago
6 0
8 ( m + 7 ) = 2 1
your welcome ! <3
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What is 60 percent written as decimal
Sladkaya [172]
To convert ANY percent to a decimal we need to divide the percent by 100. Lets do it:-

60%
60 ÷ 100 = 0.60
60% written as a decimal is 0.60.

CHECK OUR WORK:-

0.60 × 100 = 60 
We are RIGHT!!!

So, 60% written as a decimal is 0.60 (0.6).

Hope I helped ya!! xD 
6 0
3 years ago
James is kayaking. He can row 3 mph in still water. If he can travel 6 miles downstream in the same amount of time that he can t
nekit [7.7K]

Answer: the speed of the current is 0.6 mph

Step-by-step explanation:

Let x represent the speed of the current.

James is kayaking. He can row 3 mph in still water. If he can travel 6 miles downstream. Assuming he went with the current, it means that his total speed while travelling downstream is (3 + x)

Time = distance/speed

Time taken to travel downstream is

6/(3 + x)

In the same amount of time, he can travel 4 miles upstream. Assuming he went against the current, it means that his total speed while travelling downstream is (3 - x). Time taken to travel upstream is

4/(3 - x)

Since the time is the same, then

6/(3 + x) = 4/(3 - x)

Cross multiplying, it becomes

6(3 - x) = 4(3 + x)

18 - 6x = 12 + 4x

4x + 6x = 18 - 12

10x = 6

x = 6/10

x = 0.6 mph

4 0
3 years ago
Whoever responds first will get marked best!!!!Elise's math class has 11 female students and 10 male students. Write the ratio o
nadezda [96]
10:21
There are 10 males and males plus females equal 21
4 0
3 years ago
WILL GIVE 100 POINTS AND BRAINLIEST FOR BEST ANSWER
coldgirl [10]

Answer:

Step-by-step explanation:-16x^2 + 24x + 16 = 0.

A. Divide by 8:

-2x^2 + 3x + 2 = 0, A*C = -2*2 = -4 = -1 * 4. Sum = -1 + 4 = 3 = B, -2x^2 + (-x+4x) + 2 = 0,

(-2x^2-x) + (4x+2) = 0,

-x(2x+1) + 2(2x+1) = 0,

(2x+1)(-x+2) = 0, 2x+1 = 0, X = -1/2. -x+2 = 0, X = 2.

X-intercepts: (-1/2,0), (2,0).

B. Since the coefficient of x^2 is negative, the parabola opens downward. Therefore, the vertex is a maximum.

Locate the vertex: h = Xv = -B/2A = -24/-32 = 3/4, Plug 3/4 into the given Eq to find k(Yv). K = -16(3/4)^2 + 16(3/4) + 16 = 19. V(h,k) = V(3/4,19).

C. Choose 3 points above and below the vertex for graphing. Include the points calculated in part A which shows where the graph crosses the x-axis.

4 0
3 years ago
I need this Please help me
ANEK [815]

9514 1404 393

Answer:

  (c)  Not parallel: corresponding angles are not congruent

Step-by-step explanation:

The two angles shows are both "east" of the respective points of intersection, so are "corresponding" angles. If (and only if) lines r and s are parallel, corresponding angles are congruent. These angles have different measures, so lines r and s are not parallel.

4 0
3 years ago
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