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3 years ago

I NEED HELP!!! PLEASE! PLEASE! PLEASE! ASAP!

Mathematics

1 answer:

Paha777 [63]3 years ago

5 0

Answer:

I believe the answer is A

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Calculate cardiac output if the heart rate is 125 beats/minute, the end-diastolic volume is 130 ml, and the end-systolic volume

Anni [7]

Answer: cardiac output=11,250ml/min

Step-by-step explanation: Cardiac output = Heart rate(beats/min) × stokes volume (ml/beat)

Cardiac output = 125 ×(130 -40)

Cardiac output= 125×90 =11,250ml/min

7 0

4 years ago

In ΔOPQ, the measure of ∠Q=90°, OQ = 80, QP = 39, and PO = 89. What ratio represents the cosecant of ∠P?

Serjik [45]

Answer:

cos(O) = 39 / 89

Step-by-step explanation:

Given:

ΔOPQ, where

∠Q=90°

PO = 89

OQ = 39

QP = 80

cosine of ∠O?

cos(O) = Adjacent / Hypotenuse

cos(O) = 39 / 89

3 0

3 years ago

Read 2 more answers

A and B are two events. P(A) = 0.54; P(B) =0.42; p(A or B) = 0.85. Find the probability of A and B.

lesantik [10]

Answer:

0.98

Step-by-step explanation:

Work Shown:

P(A or B) = P(A) + P(B) - P(A and B)

P(A or B) = 0.13 + 0.85 - 0

P(A or B) = 0.98

Note that P(A and B) is 0. This is because we are told A and B are mutually exclusive events. This means both events cannot happen simultaneously. An example would be flipping a coin to have it land on heads and tails at the same time.

6 0

3 years ago

Brainiest to whoever correct

LuckyWell [14K]

Answer: 2nd one.

Step-by-step explanation:

7 0

2 years ago

The polygon below represents a regular octagon.

gayaneshka [121]

Answer:

a). x = 135°

b). y = 45°

c). z = 67.5°

Step-by-step explanation:

Since sum of interior angles of a regular polygon is represented by,

Sum of interior angles = (n - 2) × 180°

Here n = number of sides

For a regular octagon, n = 8

Sum of interior angles = (8 - 2) × 180° = 1080°

And measure of one interior angles = $\frac{\text{Sum of interior angles}}{n}$

x = $\frac{1080}{8}$

x = 135°

From the figure attached,

Angle C has been divided in 6 equal parts,

Therefor, m∠ECD = $\frac{135}{6}$ = 22.5°

Since ∠ECD ≅ ∠CED,

m∠CED = 22.5°

Since m∠E = 135°

m∠FEC = 135 - 22.5 = 112.5°

In ΔFEC,

m∠FEC + m∠ECF + m∠CFE = 180°

112.5 + 22.5 + z = 180

z = 180 - 135

z = 45°

Similarly, in ΔCGF,

m∠CGF + m∠CFG + m∠GCF = 180°

(135 - y)° + (135 - z)° + 22.5° = 180°

270 - (y + z) + 22.5 = 180

292.5 - (y + 45) = 180

247.5 - y = 180

y = 247.5 - 180

y = 67.5°

3 0

3 years ago