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Murljashka [212]
3 years ago
11

Solve for x and y simultaneously if:x+4=2y and y2-xy+21=0​

Mathematics
1 answer:
salantis [7]3 years ago
5 0

Answer:

Step-by-step explanation:

x=−10, y=−3

x=10, y=7

y=7,x=10

y=−3,x=−10

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Solve the inequality graph the solution set and write it in interval notation x-6<5(x+2)
ANEK [815]

Answer:

x>-4

Step-by-step explanation:

x-6>5x+10

x-5x>10+6

-4x<16

x<16/-4

x<-4

3 0
3 years ago
Suppose you roll two dice. find the probability of rolling a sum of 11.​
stiv31 [10]

Answer:

1/18

Step-by-step explanation:

There are 36 different possible combinations. There are only two ways of rolling a sum of 11.

2/36 = 1/18

5 0
3 years ago
The wind speed near the center of a tornado is represented by the equation S=93logd+65, where d is the distance, in miles, that
dezoksy [38]

Answer:

Therefore,

Wind speed of a Tornado when it travels 4 miles is 121.0 miles per hour.

Step-by-step explanation:

Given:

The wind speed near the center of a tornado is represented by the equation,

S=93\log d+65

Where,

d =  the distance, in miles

S = the wind speed, in miles per hour.

To Find:

S = ? at d = 4 miles

Solution:

We have

S=93\log d+65        .........Given

Substitute d = 4 in above equation we get,

S=93\log 4 + 65=93\times 0.602 +65=120.99

Rounding the answer to the nearest tenth we have

S=121.0\ mph

Therefore,

Wind speed of a Tornado when it travels 4 miles is 121.0 miles per hour.

4 0
3 years ago
SUZANNE rode her bike 15mph for 12 mins then rode 12mph for 20 mins how far did she ride
Anika [276]

Answer:

7 miles

Step-by-step explanation:

Distance = Rate times Time

Distance #1:  (15 mph)(12/60 hr) = 3 miles

Distance #2:  (12 mph)(20/60 hr) = 4 miles

Total distance ridden = 7 miles

7 0
2 years ago
Can someone help me with this one
HACTEHA [7]
X = 21 + 34
Answer: x = 55°
7 0
3 years ago
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