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Zinaida [17]
3 years ago
4

In ∆ABC, m∠ACB = 90°, m∠A = 40°, CD (D ∈ AB ) is a segment perpendicular to side AB . Find m∠DBC and m∠BCD.

Mathematics
2 answers:
Alex Ar [27]3 years ago
8 0

Answer:

I go to RSM too.

Step-by-step explanation:

k0ka [10]3 years ago
4 0

Answer: Do you go to RSM. If yes which class. I know  DBC is 50 degrees but no clue on BCD. If you have to do formal solutions, (STATEMENT REASON) i dont know.

Step-by-step explanation:

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Joe asked the children in his class which flavours of ice-cream they like.
Leya [2.2K]

Answer:

a. 19

b. 14

Step-by-step explanation:

From the venn diagram, we see that:

9 children like only Vanilla

7 like vanilla and chocolate

12 like only chocolate, and

2 like neither chocolate nor vanilla

Thus:

a. Number of children that liked Chocolate ice-cream = those that like chocolate only + those that like both chocolate and vanilla = 12 + 7 = 19

19 children like chocolate ice-cream.

b. Number of children who do not like Vanilla ice-cream = those that like chocolate only + those that do not like neither chocolate nor vanilla = 12 + 2 = 14

14 children do not like vanilla ice-cream.

5 0
3 years ago
Erica and Amy started biking in the opposite directions at the same time from the same place. Erica biked at a speed of 6 meters
ipn [44]
Since they are moving in opposite directions, this is the same as Amy staying still and Erica biking at 10 meters per second away from her.

To travel 1km = 1000m at 10 meters per second, you need 1000/10 = 100 seconds.
3 0
4 years ago
How do you write 9.14 X 10^-5 in standard form?
soldi70 [24.7K]
.0000914

Since it is negative you go behind the .

so you would go 5 spaces behind the point

8 0
3 years ago
Find the coordinates of the three points on the graph of y = (1/2)x² -2x whose x-values are −2, 0, and 4.
MaRussiya [10]

Answer:

y = 6

y = 0

y = 0

Step-by-step explanation:

y=\frac{1}{2}x² -2x

When, x = -2

y=\frac{1}{2}\times (-2)^2-2\times(-2)\\\Rightarrow y=\frac{1}{2}4+4\\\Rightarrow y=2+4\\\Rightarrow y=6

y = 6

When, x = 0

y=\frac{1}{2}\times (0)^2-2\times(0)\\\Rightarrow y=0+0\\\Rightarrow y=0

y = 0

When, x = 4

y=\frac{1}{2}\times (4)^2-2\times(4)\\\Rightarrow y=\frac{1}{2}16-8\\\Rightarrow y=8-8\\\Rightarrow y=0

y = 0

3 0
3 years ago
What inequality represents the verbal expression? all real numbers less than 70
neonofarm [45]

For this case we have:

Let x be the variable that belongs to the real numbers. Then, all reals less than 70 can be expressed as:

x

The tip of the inequality is directed to the real numbers, since they tell us that they are less than 70, for 70 the inequality remains open.

Answer:

x

5 0
3 years ago
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