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Flauer [41]
2 years ago
7

Find the number that makes the ratio equivalent to 5:6. :66

Mathematics
1 answer:
choli [55]2 years ago
4 0

Answer:

55 - you multiplied 6 by 11 to get 66 so you multiply by 5 by 11 to get 55.

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A train travels 60 km in 1 hour. How long will it take to go 150 km, if the speed is uniform
jeka94

Answer:

non -uniform

Step-by-step explanation:

because 120km=2 hour

150km=2 hour 30 min

may be the answer is non-uniform.

5 0
2 years ago
Read 2 more answers
During the first 50 minutes of flight, the Concorde climbs from ground level to an altitude of about 52,000 ft. What is the conc
horsena [70]

Let

x--------> the time in minutes

y-------> an altitude in feet

we know that

For x=0 min  y=0 ft

For x=50 min y=52,000 ft

so

the rate of change is equal to calculate the slope of the linear equation

\frac{52,000-0}{50-0}=\frac{52,000}{50}=1,040\frac{ft}{min}

Round to the nearest hundred-------->1,000\frac{ft}{min}

therefore

<u>the answer is</u>

1,000\frac{ft}{min}


7 0
3 years ago
Evaluate the discriminant of the equation. Tell how many solutions each equation has and whether the solutions are real or imagi
cupoosta [38]

Answer:

D=-4<0, the equation has no real solutions, it has two imaginary solutions.

Step-by-step explanation:

The quadratic equation x^2 +4x+5=0 has coefficients

a=1,

b=4,

c=5.

The discriminant D is the expression

D=b^2-4ac.

Hence,

D=4^2-4\cdot 1\cdot 5=16-20=-4

Since the discriminant is negative, the equation has no real solutions, it has two imaginary solutions.

4 0
3 years ago
Read 2 more answers
Can someone answer this
bezimeni [28]

Answer:

Step-by-step explanation:

x         6         a

8       48        c  

-4        b       20

Let the unknown numbers of the multiplication grid are a, b and c.

1). 6 × 8 = 48

2). (-4)×6 = b

    b = -24

3). (-4) × a = 20

   a = -5

4). 8 × a = c

    8 × (-5) = c

    c = -40

Therefore, missing in the given multiplication grid are,

x         6        -5

8       48       -40  

-4      -24       20

6 0
3 years ago
Square root of -49 one two or none solutions
Alika [10]

Answer: one

Step-by-step explanation:

it is 7

5 0
1 year ago
Read 2 more answers
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