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vova2212 [387]
3 years ago
9

Express each of the following in km/h.

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
3 0

Answer:

Step-by-step explanation:

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the sum of two numbers is 70. the larger number is five less than twice the smaller number . what are the two numbers
earnstyle [38]
X+y=70
x=2y-5
x=larger number
y=smaller number
now plug in the value of x to only have one variable in the equation...
Way to solve for y:
(2y-5)+y=70
3y-5=70
add 5 on both sides...
3y=75
divide by 3 on both sides
y=25
1st way to solve for x:
now plug in y in the original equation...
x+25=70
subtract 25 on both sides...
x=45
2nd way to solve for x:
plug in y for the second equation...
x=25(2)-5
x=50-5
x=45
answer: the two numbers are 45 and 25.

3 0
3 years ago
Match each line, ray, or segment with the term that best describes it.
Evgen [1.6K]

Answer:

Step-by-step explanation:

From the given diagram,

i. ACBD - circle

ii. AB = secant

ii. CD = diameter

iii. EC, EB, ED, GF and GH - radii

iv. D, C, H and F - points of tangency

v. ACB - segment

vi. CBD - semicircle

vii. CBE, BDE and FHG - sectors

vii. E and G - centers of the given circles

viii. BH and DF - tangents

ix. DAB and HF - major segments

x. EDF, EBH, GHB - right angles

xi. DA, AC, CB, BD and FH - minor arcs

5 0
3 years ago
What are the roots of the equation
ValentinkaMS [17]
To what? There is no context
7 0
3 years ago
Read 2 more answers
Jane has $130. If she saves $25 per week, in how many weeks will she have $600
Fudgin [204]
600 - 130 = 470
470 / 25 = 18.8 which rounds to about 19 weeks.
7 0
3 years ago
Read 2 more answers
Cylinder A is mathematically similar to cylinder B. The height of cylinder A is 10cm and its surface area is 440cm2​ ​. The surf
Pie

Answer:

440 = 2\pi {r}^{2}  + 2\pi(r)10 \\

3960 = 2\pi {r}^{2}  + 2\pi(r)h

\frac{3960 = 2\pi {r}^{2}  + 2\pi(r)h}{440 = 2\pi {r }^{2} + 2\pi(r)10 }

9 =  \frac{h}{10}

h=90

5 0
3 years ago
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